What to Wear in Jackson Hole in September 2026
Jackson Hole in September is peak elk-rut + Fall Arts Festival — 20°C / 68°F afternoons, 0°C / 32°F mountain nights, 8 rain days. Aspen-leaf peak end of month.
- Stio Doublecharge or Filson tin-cloth field jacket
- Mountain Khakis canvas + cotton-flannel
- R.M. Williams Comfort Craftsman boot
- Stetson 100X felt cowboy hat — Fall Arts Festival
- Lightweight wool gloves — 6am elk overlook (0°C / 32°F)
- Patagonia Nano Puff vest underneath
- Lightweight cotton — daytime 20°C / 68°F + 20°C swing
- Formal leather — early-snow possible above 9,000 ft
- Single-layer wool — sunset drops 20°C / 36°F
Jackson Hole in September runs Greater Yellowstone peak-fall-transition. NOAA Jackson WY data put afternoon highs at 20°C / 68°F and overnight lows at 0°C / 32°F with 8 precipitation days; early snow possible above 9,000 ft elevation (the heritage Teton Pass + Togwotee Pass first-snow registers typically late September). The heritage Greater Yellowstone elk-rut peaks mid-September through early October — the recognized 'bugling' register at the heritage National Elk Refuge (the heritage 24,700-acre wintering ground for 7,000-10,000 elk; September elk bugling at the heritage Refuge boundary fence) and at the heritage Oxbow Bend + Schwabacher Landing in Grand Teton National Park. The dressing register reads heavy-transition: a Stio Doublecharge insulated jacket (the heritage Jackson-engineered 700-fill responsibly-sourced down) or Filson tin-cloth field jacket (Seattle 1897) over Mountain Khakis canvas + cotton-flannel button-down; the heritage Jackson-evening boot register reads R.M. Williams Comfort Craftsman or Lucchese 2000 over wool sock for the trail-dust + late-snow conditions. Local register: Stio (East Broadway — the heritage Stio Cottonwood + Doublecharge fall transitional outerwear), Mountain Khakis (Glenwood Street since 2003 — the heritage Mountain Khakis Original cotton-canvas + Pendleton flannel pairing), Jackson Hole Hat Company (Cache Street — the heritage Stetson 100X felt cowboy hat in fall cocoa or sand), Made (Glenwood Street — the heritage Wyoming-craft-jewelry register). Heritage anchors: Jackson Hole Fall Arts Festival (early-mid September — the heritage 41-year-old festival at the heritage Snow King Center + the heritage National Museum of Wildlife Art + the heritage Jackson Hole Conservation Alliance, the recognized 'WyoArt of the Year' register), the heritage Western Visions Show & Sale (the heritage National Museum of Wildlife Art's recognized juried-Western-art show + auction, mid-September — the recognized $30,000-and-up Western-art-collector register), the heritage National Elk Refuge elk-bugling-overlook (the heritage US Fish and Wildlife Service self-drive Refuge Road, no permit required; sunrise overlook at 6:30am for September), the heritage Oxbow Bend + Schwabacher Landing photographic register inside Grand Teton NP. Skip lightweight cotton entirely — daytime 20°C / 68°F + 20°C / 36°F sunset drop.
Jackson Hole September is elk bugling at the National Elk Refuge dawn, Jackson Hole Fall Arts Festival auction by 18, R.M. Williams boot at the Cowboy Bar by 21. Stio Doublecharge + Mountain Khakis canvas + Stetson 100X felt + cashmere wrap.
The capsule
- Stio Doublecharge insulated jacket or Filson tin-cloth field jacket — NOAA Jackson WY logs 20°C / 68°F afternoons in September with 0°C / 32°F mountain nights. Stio Doublecharge insulated jacket (the heritage Jackson-engineered 700-fill responsibly-sourced down) in cocoa, navy, oat, or olive layers under the Patagonia rain shell or stands alone for the 14:00-16:00 elk-overlook walk. Filson tin-cloth field jacket (Seattle 1897 — the heritage Pacific-Northwest tin-cloth waxed-cotton register, the recognized fall-transition outdoor-Wyoming alternative) in tan or olive reads correct at the heritage Jackson Hole Fall Arts Festival outdoor sessions + the heritage Western Visions sale at the National Museum of Wildlife Art.
- Mountain Khakis Original Mountain pant + heavyweight cotton-flannel — Mountain Khakis (the heritage Jackson-founded heavyweight-canvas pants since 2003) Original Mountain pant in walnut, sand, or oxblood is the recognized Jackson town-trouser. Heavyweight cotton-flannel button-down (Filson Mackinaw or Pendleton Board Shirt — the heritage 1909 Pendleton wool register) over a Smartwool 250 merino tee + the Mountain Khakis canvas reads correct at the heritage Snake River Brewing + the heritage Cowboy Bar + the heritage Saturday Farmers' Market on the Town Square (final week of September).
- R.M. Williams Comfort Craftsman or Lucchese 2000 cowboy boot — The heritage Jackson-evening boot register reads R.M. Williams Comfort Craftsman (Adelaide 1932, the heritage one-piece-leather Australian-stockman's boot — the recognized Jackson-cowboy register alternative) in chestnut or oxblood, or Lucchese 2000 (San Antonio 1883, the heritage 5th-generation Texas-bootmaker — the heritage authentic-Western register) in cocoa or oxblood. The heritage Cowboy Bar saddle-stool register and the heritage Jackson Hole Fall Arts Festival auction-after-party (Snow King Center) both read R.M. Williams or Lucchese over Mountain Khakis canvas.
- Jackson Hole Hat Company Stetson 100X felt cowboy hat — Jackson Hole Hat Company (the heritage Cache Street custom-cowboy hatter since 2002) custom-shapes a Stetson 100X open-crown beaver felt in cocoa, sand, ivory, or black — the recognized Jackson-Fall-Arts-Festival crown. The heritage Western Visions sale at the heritage National Museum of Wildlife Art and the heritage Jackson Hole Fall Arts Festival auction-after-party at the heritage Snow King Center both read Stetson 100X felt over Filson tin-cloth field jacket. Skip generic newsboy or beanie — Jackson-locals decode the un-Jackson register instantly.
- Patagonia Nano Puff vest + lightweight rain shell — Jackson Hole September weather oscillates: a sunny 20°C / 68°F afternoon at the heritage Mormon Row barns + an early-snow flurry at the heritage Teton Pass summit + a 0°C / 32°F overnight at the heritage Mormon Row + the heritage Antelope Flats + the heritage Schwabacher Landing for sunrise photography. Patagonia Nano Puff vest (Ventura CA 1993, 60g PrimaLoft) layers under the Stio Doublecharge or Filson tin-cloth. Patagonia Torrentshell or Arc'teryx Beta packable rain shell for the early-snow + thunderstorm window.
- Loro Piana cashmere wrap or Naadam Mongolian-cashmere shawl + Hermès silk scarf — The heritage Jackson Hole Fall Arts Festival evening register (Snow King Center auction + the heritage Wort Hotel Silver Dollar Bar + the heritage Million Dollar Cowboy Bar — the recognized 'Western-art-collector evening' register) reads Loro Piana cashmere wrap (Quarona, Piemonte 1924) or Naadam Mongolian-cashmere shawl (the heritage 2014 New York-founded sustainable-cashmere brand — the recognized contemporary-cashmere alternative) in cocoa, ivory, or oat over the Mountain Khakis canvas. Hermès 90cm silk square at the neck — the heritage Hermès Jackson seasonal pop-up September.
- Stio Cottonwood overshirt or Pendleton wool shirt-jacket + lightweight wool gloves — Stio Cottonwood overshirt (the heritage Stio fall-transitional cotton-twill workwear) or Pendleton wool shirt-jacket (the heritage 1909 Pendleton Board Shirt or the heritage Pendleton Trail Shirt) in cocoa, sand, or oxblood layers over the Mountain Khakis canvas + cotton-flannel base for the heritage 6am National Elk Refuge sunrise + the heritage Oxbow Bend + Schwabacher Landing dawn-photographic register. Lightweight wool gloves for the 0°C / 32°F sunrise-overlook.
- Crossbody bag + reusable water bottle 1L + cash USD + bear spray + binoculars — Jackson Hole September walking demands hands-free for the heritage Jackson Hole Fall Arts Festival outdoor sessions + the heritage Saturday Farmers' Market (final week of September) + the heritage National Elk Refuge self-drive Refuge Road. Crossbody in canvas or leather. Reusable 1L water bottle for the elk-overlook + the heritage Western Visions sale walking-and-bidding. Cash USD for the Saturday Farmers' Market vendors. Bear spray (Counter Assault or UDAP, $50 at Jack Dennis Outdoor Shop or Skinny Skis on East Broadway). Binoculars (Leica or Swarovski 8x42 or 10x42 — the heritage Jackson-wildlife-observer register) for the heritage National Elk Refuge dawn elk-bugling-overlook + the heritage Oxbow Bend moose + bear sightings.
Day to night
Filson tin-cloth field jacket + Mountain Khakis canvas + Pendleton wool shirt-jacket · Smartwool merino base · Stio Cottonwood overshirt · R.M. Williams Comfort Craftsman boot · Stetson 100X felt cowboy hat · lightweight wool gloves · Patagonia Nano Puff vest underneath · daypack with binoculars + bear spray + 1L water. National Elk Refuge sunrise overlook 6:00am, Schwabacher Landing photo at 9:00, Jackson Hole Fall Arts Festival session at the National Museum of Wildlife Art 11:00, Persephone Bakery lunch 13:00.
Stio Doublecharge insulated jacket + Mountain Khakis canvas + cashmere turtleneck · R.M. Williams or Lucchese 2000 cowboy boot · Stetson 100X felt · Loro Piana cashmere wrap + Hermès silk scarf · crossbody. Cowboy Bar saddle-stool 17:00, Snake River Brewing wood-deck dinner 19:00, Jackson Hole Fall Arts Festival auction at Snow King Center 21:00, the heritage Wort Hotel Silver Dollar Bar second-stop 22:30.
What to avoid
- Lightweight cotton — daytime 20°C / 68°F + 20°C swing
- Formal leather — early-snow possible above 9,000 ft
- Single-layer wool at Elk Refuge sunrise — 0°C / 32°F
- Generic newsboy or beanie at Fall Arts Festival — un-Jackson
- Refuge self-drive without binoculars — 200-800 yard viewing
- Mormon Row sunrise without 5:30am arrival — 6:15-6:30am peak
Frequently asked questions
Per NOAA Jackson WY data: average daily high 20°C (68°F), low 0°C (32°F), 8 precipitation days. Early snow possible above 9,000 ft elevation; the heritage Teton Pass + Togwotee Pass first-snow registers typically late September. UV index 5 by midday. Daylight 12h 25m. The 20°C / 36°F diurnal swing means morning Stio Doublecharge or Filson tin-cloth + lightweight wool gloves at the 6am National Elk Refuge sunrise overlook + afternoon shed-the-vest at the 20°C / 68°F Town Square lunch + evening cashmere wrap at the heritage Cowboy Bar.
The Greater Yellowstone elk-rut peaks mid-September through early October — the recognized 'bugling' register at the heritage National Elk Refuge (the heritage 24,700-acre wintering ground for 7,000-10,000 elk; September bull elk bugling at the heritage Refuge boundary fence + the heritage Refuge Road dawn-overlook). Best viewing: dawn (5:30-7:30am September) at the heritage Refuge Road self-drive (north of the heritage National Museum of Wildlife Art on Highway 191 — the recognized self-drive overlook with no entrance fee or permit). Pack: Stio Doublecharge + Mountain Khakis canvas + Pendleton wool shirt + Stetson 100X felt cowboy hat + lightweight wool gloves + Patagonia Nano Puff vest + bear spray + binoculars (Leica or Swarovski 8x42 or 10x42). The heritage Oxbow Bend (Grand Teton NP, north of Moose) and the heritage Antelope Flats (Mormon Row area) are the recognized September moose + elk + bison-viewing alternatives. Skip approach within 25 yards (NPS-mandated wildlife-distance per Yellowstone-Grand Teton 2008 guidance — bear spray required separately).
The Jackson Hole Fall Arts Festival is the heritage 41-year-old festival at the heritage Snow King Center + the heritage National Museum of Wildlife Art + the heritage Jackson Hole Conservation Alliance (early-mid September — the recognized 'WyoArt of the Year' register). Anchors: the heritage Western Visions Show & Sale (the heritage National Museum of Wildlife Art's recognized juried-Western-art show + auction, mid-September — the recognized $30,000-and-up Western-art-collector register, the heritage Greg Beecham wildlife-painting + Tucker Smith landscape register); the heritage Quick Draw on the Town Square (the heritage Friday-evening live-art-creation event); the heritage Palates & Palettes Gallery Walk (the heritage Friday-evening downtown gallery cluster). The heritage 2026 festival runs early-mid September. Pack: Stio Doublecharge + Mountain Khakis canvas + R.M. Williams or Lucchese cowboy boot + Stetson 100X felt cowboy hat + Loro Piana cashmere wrap for evening; Filson tin-cloth field jacket + Pendleton wool shirt + Mountain Khakis canvas + lightweight wool gloves for daytime outdoor sessions.
Yes — the heritage Greater Yellowstone aspen-leaf peak runs the last week of September through the second week of October, the recognized Wyoming-fall photographic destination at the heritage Snake River + the heritage Granite Hot Springs Road (Granite Creek, 35 miles south of Jackson — the heritage 8-mile dirt-road drive to the heritage 1933 CCC-built Granite Hot Springs pool). The heritage Antelope Flats + Mormon Row aspen-grove + the heritage Schwabacher Landing aspen-grove are the recognized Grand Teton-fall photographic register. Peak typically October 1-15 in Jackson; mid-September on the Yellowstone-side. Pack: Filson tin-cloth field jacket + Mountain Khakis canvas + R.M. Williams Comfort Craftsman + Stetson 100X felt + Loro Piana cashmere wrap + Patagonia Nano Puff vest + lightweight wool gloves. The heritage Granite Hot Springs Road requires high-clearance vehicle (the heritage 8-mile FS Road 30500); the heritage Granite Hot Springs pool ($10 entry, the recognized historic CCC-built outdoor hot-springs pool — heated 38-43°C / 100-110°F) reads correct in late-September aspen-leaf-and-steam ambiance.
The heritage Snake River Brewing (East Broadway since 1994 — the heritage Wyoming-craft-brewery anchor). The heritage Million Dollar Cowboy Bar (Cache Street since 1937 — the heritage 'Million Dollar Cowboy Bar' silver-dollar-inlay register). The heritage Wort Hotel Silver Dollar Bar (Glenwood Street, the heritage 1941 Wort Hotel — the recognized 'Silver Dollar inlaid bar' register, the heritage Wort Hotel Silver Dollar Showroom live-music). The heritage Persephone Bakery (East Broadway French-bakery + breakfast-and-lunch). The heritage Hand Fire Pizza (Glenwood Street wood-fired pizza). The heritage Glorietta (East Broadway contemporary-Italian, since 2018). The heritage The Kitchen (East Broadway contemporary American). The heritage Bin 22 (East Broadway wine-bar + small-plates). The heritage Local Restaurant + Bar (East Broadway Wyoming-farm-to-table). The heritage Jenny Lake Lodge dining room (the heritage 1924 lodge inside Grand Teton National Park — the heritage 6-course tasting menu, jacket required). The heritage Cafe Genevieve (Glenwood Street New Orleans-meets-Wyoming, the heritage 1910 log cabin). Pack: Mountain Khakis canvas + Filson Mackinaw flannel + R.M. Williams or Lucchese cowboy boot + Stetson 100X felt + Loro Piana cashmere wrap for evening; Stio Cobble Run cotton + Mountain Khakis Cobalt + Hoka Speedgoat for daytime hike-and-eat.
