Things to Do in Jackson Hole in September

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September in Jackson Hole delivers what July and August promise but rarely provide. Comfortable weather without the gridlock. After Labor Day, typically the first Monday of the month, the summer crowds thin across Grand Teton National Park and downtown Jackson. Daytime highs average 21°C (70°F), warm enough for a full day on the trail. Nights drop to 5°C (41°F), and the air turns crisp and dry. The smell of sage and lodgepole pine fills the Snake River valley on still mornings.

The aspens along Cottonwood Creek and the Gros Ventre Range begin their turn to gold during the second and third weeks. Entire hillsides shift to yellow and amber against the granite skyline of the Teton Range. The Jackson Hole Fall Arts Festival, which runs roughly 12 days through mid-September, fills galleries and outdoor venues around George Washington Memorial Park with exhibitions and the famous QuickDraw live-painting competition. Bull elk begin their rut across the valley floor around September 15, and their bugling carries for kilometers in the still morning air. You might hear them before sunrise from the roadside near Kelly or along Antelope Flats Road.

To be fair, September is not flawless. Wildfire smoke from fires across Idaho, Montana, or California can drift into the Teton valley in some years. The normally sharp peaks become hazy silhouettes for 3 to 5 days at a stretch. A few businesses in Teton Village close briefly between summer operations and the December ski season. But for visitors who don't ski, September and June tend to trade the top spot depending on whether you prefer fall colors or wildflowers.

Why visit in September

Aspen foliage peaks across the Gros Ventre Range and Snake River corridor during the second and third weeks, with entire hillsides turning gold against the Teton skyline.
Summer crowds drop by roughly half after Labor Day weekend, and trails in Grand Teton National Park and restaurants on Town Square become far more accessible than in July or August.
The elk rut begins around mid-September. Bull elk bugling across the valley floor is one of the most distinctive wildlife experiences in North America, and Jackson Hole is one of the premier places to witness it.
The Jackson Hole Fall Arts Festival, running roughly 12 days through mid-September, brings gallery openings, outdoor sales, and the QuickDraw competition to the valley.

Worth knowing

Wildfire smoke from Idaho, Montana, or California can settle into the valley in some years, obscuring the Teton views for 3 to 5 consecutive days with little advance warning.
Some businesses in Teton Village close for maintenance between summer and winter ski operations, limiting dining and shopping options in that area.
Overnight lows near 5°C (41°F) and occasional dips below freezing catch visitors who pack only for warm days. The temperature swing is the sharpest of any month with reliably pleasant afternoons.

Best for

Think twice if

Weather measured 21° / 5°C 48mm rain · 7 rainy days · 63% humidity rains perceptibly ~0.9h/day · 93% of mornings dry

Crowds medium

Pack Layers are non-negotiable with a 16°C daily temperature swing. Pack a lightweight sun layer for midday, a fleece or light down jacket for mornings and evenings, a packable rain shell for afternoon showers, and a wool beanie for dawn outings. Sun protection matters at 1,900m (6,200 ft) elevation, where UV intensity runs 25-30% higher than at sea level.

September days in Jackson Hole are warm and dry, with clear-sky mornings that feel like late summer and evenings that remind you winter is about 8 weeks away. Afternoons typically reach 21°C (70°F), comfortable in a t-shirt and light pants, though you'll want a layer by sundown. Nights drop to around 5°C (41°F), cold enough to see your breath at dawn near the Snake River. Rainfall averages 48mm spread across roughly 7 days. Most of it comes as brief afternoon showers rather than all-day soakers. The valley's humidity averages 63%, well below what you'd experience east of the Mississippi. The temperature swing of nearly 16°C (29°F) between midday and midnight is the defining feature of September in the valley.

Seasonal caution

Wildfire smoke from fires in Idaho, Montana, or California can drift into the valley, reducing visibility to under 5 km and raising particulate levels. Check AirNow.gov before outdoor activities on hazy mornings.
Overnight lows can dip below 0°C (32°F) in late September, particularly at higher elevations. Early-season ice forms on exposed rock above the treeline.
Snow squalls are possible above 2,700m (9,000 ft) from mid-September onward. High passes like Hurricane Pass and Paintbrush Divide can receive 5-10 cm (2-4 in) with little warning.

Year-round climate

Averages from the last 5 years.

Monthly climate averages for Jackson Hole
Month	Avg high (°C)	Avg low (°C)	Rainfall (mm)
Jan	-2	-13	61
Feb	0	-11	82
Mar	4	-9	75
Apr	8	-6	51
May	14	-1	59
Jun	22	5	29
Jul	27	10	13
Aug	25	9	49
Sep	21	5	48
Oct	13	-1	58
Nov	4	-7	55
Dec	1	-9	94

Holidays and festivals in September

Public holidays

Labour Day(Labor Day)7 September 2026

Headline events

Citywide

Jackson Hole Fall Arts Festival

Early to mid-September, approximately 12 days

The valley's largest cultural event draws artists, collectors, and gallery owners from across the country for roughly 12 days of exhibitions, artist talks, late-night gallery openings, and the famous QuickDraw competition. More than 30 participating galleries stay open late, and the event sets the cultural tone for the entire month in Jackson.

#JHFallArts

Best things to do in September

Hiking Cascade Canyon Trail in Grand Teton National Park

hiking

The 14.5 km (9 mi) out-and-back trail from Jenny Lake climbs through groves of aspen and Douglas fir with views of the Cathedral Group peaks. September's thinner crowds mean you might have sections of the canyon to yourself, a rarity in the peak months.

Aspens along the canyon turn gold in the second and third weeks, and trail congestion drops by half after Labor Day.

Booking tipThe Jenny Lake shuttle boat saves 3.2 km (2 mi) of flat lakeside walking each way. It still runs in September but on a reduced schedule, so check departure times before heading out.

Elk rut wildlife viewing on Antelope Flats

wildlife

Bull elk gather harems across the valley floor and sagebrush flats near Kelly and along Antelope Flats Road from mid-September. Their bugling, a high-pitched call that carries for kilometers in the still pre-dawn air, is one of the most distinctive sounds in American wildlife.

The elk rut peaks between mid-September and early October. This is the only window when bull elk vocalize regularly, and the Jackson Hole valley is one of the best places in North America to witness it.

Booking tipArrive before dawn, between 05:30 and 06:00. Bull elk are most vocal in the first 90 minutes of daylight. Stay in your vehicle and keep 25m (75 ft) distance.

Jackson Hole Fall Arts Festival gallery walks

culture

More than 30 galleries across downtown Jackson and the highway corridor open their doors for extended evening hours during the festival's 12-day run. Participating spaces range from contemporary Western art to landscape photography and bronze sculpture.

The festival happens only in September, and many galleries debut new collections specifically for this event.

Booking tipGallery walks are free and don't require tickets. The opening-night event on the first Friday tends to draw the largest crowds.

Fly fishing the Snake River

outdoor

The upper Snake River runs through the Jackson Hole valley for roughly 80 km (50 mi), with public access points near Wilson, South Park, and below Jackson Lake Dam. September is prime dry-fly season for cutthroat trout, as the water cools and fish feed aggressively before winter.

Water temperatures drop into the ideal 10-13°C (50-55°F) range for trout, triggering active surface feeding. Fewer anglers on the water than in July or August.

Booking tipLicensed outfitters in Jackson book guided float trips weeks ahead during the Fall Arts Festival period. Reserve by mid-August for mid-September dates.

Scenic float on the Snake River

outdoor

Non-fishing float trips cover 8-16 km (5-10 mi) stretches of the Snake River, drifting past cottonwood groves and willow banks with the Teton Range as a backdrop. Bald eagles, ospreys, and moose are common sightings along the riverbanks.

Fall color along the riverbanks begins in mid-September, and the lower water levels of late summer create calm, clear floating conditions. Morning floats bring frequent moose sightings as they browse riverside willows.

Booking tipMorning departures before 09:00 offer the best wildlife-viewing odds and the flattest light for photography.

Day trip to Yellowstone's southern loop

sightseeing

The south entrance to Yellowstone National Park sits roughly 95 km (60 mi) north of Jackson via the John D. Rockefeller Jr. Memorial Parkway. September visitors can reach Old Faithful, West Thumb Geyser Basin, and Yellowstone Lake with dramatically shorter wait times than summer.

After Labor Day, Yellowstone's visitation drops by roughly 40% from its July peak. September is one of the few months when you can find parking at Old Faithful before noon without circling the lot.

Booking tipStart by 07:00 from Jackson to reach Old Faithful before 10:00. The south entrance typically stays open through early November, but check for early-season closures on Dunraven Pass.

Hiking Taggart Lake Trail

hiking

This 5 km (3.1 mi) loop in Grand Teton National Park reaches a glacial lake at the base of Avalanche Canyon. The moderate grade makes it accessible to most fitness levels, and the aspen groves along the approach trail provide some of the valley's most photogenic fall color.

Peak aspen color surrounds the trail in the second half of September, and the morning light on the Tetons reflected in the lake is sharper in autumn's clearer air.

Sunrise photography at Schwabacher Landing

photography

This riverside access point in Grand Teton National Park offers mirror-still water reflecting the full Teton Range at dawn. Beaver ponds and cottonwood trees frame the foreground. Serious landscape photographers treat this spot as one of the top sunrise locations in the American West.

Fall color in the cottonwoods and willows adds warm tones to the foreground, and September's lower sun angle produces longer golden-hour windows than midsummer.

Booking tipArrive at least 30 minutes before sunrise to secure a position along the river. There are roughly 15 good spots, and on clear September mornings most fill before first light.

What to eat in September

In season: fruit

Huckleberries
September marks the tail end of huckleberry season in the Greater Yellowstone area. These small, tart berries appear in pancakes, pies, jams, and cocktails at bakeries and restaurants across Jackson. They grow wild above 1,800m (6,000 ft) and cannot be commercially cultivated, which keeps supply limited.

On menus now

Pan-seared elk
Wyoming's elk hunting season opens in some units on September 1, and restaurants across the valley feature fresh local game. Elk tenderloin and elk burgers appear on fall menus, leaner and more mineral-tasting than beef.
Snake River fine-spotted cutthroat trout
The subspecies native to the upper Snake River watershed is a September highlight for fly anglers and a seasonal feature on local menus. The flesh is delicate, pink-toned, and typically served pan-fried or grilled with valley herbs.
Bison chili
As evenings cool into single-digit Celsius temperatures, bison chili becomes comfort food at Jackson restaurants. The meat is sourced from Wyoming ranches, richer and denser than beef, and pairs well with locally brewed amber ales.

In markets

Teton Valley harvest produce
Farms across the Teton Valley in eastern Idaho, roughly 30 km west over Teton Pass, supply Jackson's farm-to-table restaurants with September's peak harvest of squash, root vegetables, and hearty greens.

Regular events in September

QuickDrawFree

Part of the Fall Arts Festival. Roughly 50 artists set up easels in George Washington Memorial Park and create original works in under 90 minutes, then sell them immediately to the gathered crowd. It is one of the most distinctive art-sale formats in the Western United States.

One Saturday in mid-September

Old Bill's Fun Run

An annual community fun run and charity fundraiser held in Grand Teton National Park since 1997. Participants walk, run, or bike an 8 km (5 mi) course along the base of the Tetons. The event has become one of the largest per-capita charitable giving events in the United States, drawing thousands of residents and visitors.

Saturday after Labor Day weekend, early September

Town Square Saturday farmers marketFree

A weekly open-air market on Town Square in downtown Jackson. Local vendors sell produce from Teton Valley farms, local honey, baked goods, and prepared food. Live music and food stands make it a social gathering point every Saturday morning through early October.

Every Saturday morning, June through early October

Best places this September

Grand Teton National Park
national park
The 130,000-hectare park encompasses the Teton Range and the valley floor. In September, fall color appears along the lakeshores and in the canyons while the high peaks may wear their first dusting of new snow. Fewer visitors after Labor Day mean shorter waits at trailheads and less competition for backcountry permits.
Moose
National Museum of Wildlife Art
museum
Founded in 1987, the museum sits on a hillside overlooking the National Elk Refuge north of Jackson. Its 14 galleries house over 5,000 works spanning 5 centuries of wildlife art. September brings special exhibitions tied to the Fall Arts Festival, and the observation deck offers views across the refuge as elk begin to gather for winter.
North Jackson
Chapel of the Transfiguration
historic site
This small log chapel in Moose was built in 1925 and features a picture window behind the altar that frames the Teton Range. September morning light through that window, with the first gold in the cottonwoods outside, is one of the most photographed scenes in Wyoming.
Moose
Schwabacher Landing
viewpoint
A riverside access point in Grand Teton National Park where beaver ponds create mirror-still reflections of the Teton Range at dawn. The cottonwoods along the bank turn yellow in the latter half of September, a composition that has appeared in more landscape-photography portfolios than probably any other spot in Wyoming.
Moose
George Washington Memorial Park
park
The park at the center of downtown Jackson, known locally as Town Square, is framed by elk-antler arches at all four corners. During the Fall Arts Festival the square hosts the QuickDraw competition and serves as the social hub of the valley's September art scene.
Town Square
Jackson National Fish Hatchery
attraction
Operating since 1950, the hatchery raises Snake River cutthroat trout and sits along Flat Creek north of Jackson. Self-guided tours are free, and September is a good time to visit because the facility sees far fewer visitors than summer while the outdoor raceways remain active.
North Jackson
Snow King Mountain
mountain
Jackson's in-town ski hill rises directly behind the downtown area to 2,366m (7,763 ft). In September, the summit trail offers a 460m (1,500 ft) climb with panoramic views across the valley to the Teton Range. The cooler air and shorter grass make the ascent more comfortable than in midsummer heat.
Town Square
Oxbow Bend
viewpoint
This wide bend in the Snake River near Moran Junction offers one of the most photographed views of Mount Moran in the park. The still water creates near-perfect reflections on calm September mornings. Moose wade through the shallows here, and the surrounding willows shift to gold in the latter weeks of the month.
Moran Junction

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Packable down or synthetic insulated jacketMornings before 07:00 and evenings after sunset need real insulation, not a light fleece. You'll feel the chill standing still at a wildlife-viewing pullout or walking between galleries during the Fall Arts Festival. Shop
Lightweight packable rain shellAfternoon showers are brief but frequent enough that leaving the hotel without a shell is a gamble. A packable version that fits in a daypack works better than a heavy waterproof jacket for September's short-lived storms. Shop
Sun hat and SPF 50 sunscreenAt the valley's elevation, UV exposure is significantly more intense than at sea level. The dry air masks how quickly your skin burns, and September's clear skies offer little natural relief. Shop
Sturdy hiking boots with ankle supportTrails in Grand Teton are rocky and can be muddy after rain. September's freeze-thaw cycle at higher elevations loosens scree on steeper sections. Shop
Wool or merino base layerThe wide daily temperature swing means a thermal base layer doubles as standalone morning insulation and a nighttime sleep layer in campgrounds. Shop
Bear spray in an accessible holsterGrizzly bears are active in Grand Teton and Yellowstone through October. Bear spray is available for purchase in Jackson and at park visitor centers. Carry it on your hip or chest, not buried in your pack. Shop
Binoculars (8x42 or 10x42)The elk rut and active moose along the Snake River make binoculars essential in September. You'll want 8x or 10x magnification for dawn viewing across open sagebrush flats. Shop
Warm hat and thin liner glovesPre-dawn starts for wildlife photography or elk-bugling sessions mean standing still in near-freezing air. A wool beanie and liner gloves weigh almost nothing and prevent cold from cutting an outing short. Shop

Insider tips

The best elk bugling tends to happen between 05:30 and 07:00 along Antelope Flats Road and the Gros Ventre Road near Kelly. Park at a pullout, turn off the engine, and listen. The sound carries remarkably far in the still morning air, often from elk you cannot yet see.
After Labor Day, restaurant reservations that required 2-week lead times in July become same-day or walk-in across most of Jackson's dining scene. Even the busier spots in Wilson tend to have bar seating open by 18:00.
The Town Square Saturday farmers market is best before 09:00 for the full selection of Teton Valley produce and local honey. By 10:00, the prepared-food vendors draw larger crowds and lines build.
Teton Park Road between Moose Junction and Jenny Lake is one of the best cycling routes in the valley, and September's lighter traffic makes it noticeably safer than summer. The road is flat, paved, and roughly 13 km (8 mi) one way.
If wildfire smoke rolls in and obscures the peaks, pivot to the National Museum of Wildlife Art or the galleries in downtown Jackson. Smoke days during the Fall Arts Festival are some of the best gallery-browsing days because the outdoor-focused visitors tend to stay away.

Avoid these mistakes

Packing only for warm weather based on the comfortable daytime highs. The overnight chill is sharp, and visitors caught without a real jacket at a 06:00 sunrise shoot at Schwabacher Landing learn the hard way.
Assuming all high-altitude trails in Grand Teton are fully clear through September. Alpine passes like Paintbrush Divide and Hurricane Pass can receive early-season snow with little warning in the second half of the month. Check ranger reports at the Moose Visitor Center before attempting these routes.
Driving into Grand Teton or Yellowstone without a full tank of fuel. Gas inside the parks costs significantly more than in Jackson, and some park stations begin closing in September as concessioners wind down summer operations.
Not carrying enough water on hikes. The dry air at the valley's elevation dehydrates faster than many visitors expect, and several creek crossings in Grand Teton are dry or reduced by late summer. Bring at least 2 liters per person for any hike longer than 8 km (5 mi).

Practical tips for September

September lodging in the town of Jackson and along the Highway 89 corridor books well in advance during the Fall Arts Festival, typically the second week of the month. Reserve by early August for festival dates. Outside that window, same-week bookings are often possible at shoulder-season rates. Most Grand Teton National Park campgrounds remain open through mid-September, though some, like Jenny Lake Campground, tend to close earlier. Car rental is the only practical way to reach trailheads and Yellowstone. The START bus runs free routes between Jackson and Teton Village year-round, which helps if you're based in either spot. Dress in layers for any outdoor activity. Morning and evening temperatures can differ from midday by 15°C or more, and a sunny morning can shift to a cold rain shower by 14:00. The Moose Visitor Center in Grand Teton is the best stop for current trail conditions, bear activity reports, and backcountry permits. If you're planning to fish, a Wyoming fishing license is required on all waters including those inside the national parks.

FAQ

Is September a good time to visit Jackson Hole?

September is one of the strongest months for a general visit. Summer crowds thin after Labor Day, fall color starts in the aspens by mid-month, and the elk rut creates wildlife-viewing opportunities you won't find in any other season. The main risk is wildfire smoke from regional fires, which can obscure the Teton views in some years. Weather is comfortable for hiking during the day but drops sharply at night, so pack for both.

What is the weather like in Jackson Hole in September?

Days feel like late summer, warm enough for hiking in a t-shirt, while nights carry a genuine autumn chill that requires a jacket. Rain falls in short afternoon bursts rather than all-day soakers, and the valley's humidity stays lower than most coastal destinations. The temperature swing between noon and dawn is the single biggest variable to prepare for.

Is Jackson Hole crowded in September?

Noticeably less than July or August. After Labor Day weekend, the valley's daily visitor count drops significantly. The Fall Arts Festival in mid-September brings a smaller, culturally focused crowd that fills galleries more than trailheads. Parking at popular Grand Teton trailheads is generally available by 08:00, which is rare during peak summer.

Can you still hike in Grand Teton National Park in September?

Most trails at moderate elevations remain fully open and in good condition through the month. The alpine passes are more exposed to early-season snow, so check at the Moose Visitor Center before attempting the highest routes. The Jenny Lake shuttle boat typically operates on a reduced September schedule, which is worth confirming ahead of a Cascade Canyon hike.

When do the fall colors peak in Jackson Hole?

The timing varies by elevation and year, but the second half of September tends to deliver the strongest color across the valley. Lower-elevation cottonwoods along the Snake River often peak a bit later than the higher aspen groves in the Gros Ventre Range and along canyon trails. Some years, color lingers into the first week of October at lower elevations.