What to Wear in Jackson Hole in May 2026
Jackson Hole in May is Snake River runoff opens + Old West Days — 16°C / 61°F afternoons, 0°C / 32°F mornings, 11 rain days.
- Lightweight wool layer + cotton long-sleeve + Mountain Khakis canvas
- R.M. Williams Comfort Craftsman or Hoka Speedgoat trail shoe
- Lightweight wool gloves — 6am Snake River (0°C / 32°F)
- Patagonia Houdini packable shell — 11 rain days
- Pendleton wool blanket scarf — sunset drops 16°C / 29°F
- Stio Hometown Down jacket — Cowboy Bar evening
- Lightweight cotton-only — diurnal swing 16°C / 29°F
- Open-toe sandal — Jackson-grit + Snake River bank
- White denim — Snake River silt + Jackson-grit
Jackson Hole in May runs Greater Yellowstone runoff-opens-into-spring. NOAA Jackson station data put afternoon highs at 16°C / 61°F and overnight lows at 0°C / 32°F with 11 precipitation days; the heritage 16°C / 29°F diurnal swing demands layered wool. UV index 9 by 11am at the 6,200 ft elevation. The dressing register reads layered Greater-Yellowstone-spring: lightweight wool layer (Brunello Cucinelli or Naadam Mongolian-cashmere) + cotton long-sleeve + Mountain Khakis Original Mountain canvas pant (the heritage Jackson WY-founded heavyweight-canvas pants since 2003). R.M. Williams Comfort Craftsman boot (Adelaide 1932) for the heritage Town Square + Cowboy Bar register, or Hoka Speedgoat 5 trail shoe for the heritage Grand Teton early-spring + Snake River-bank trail register. Local register: Stio (East Broadway — the heritage 2012 Jackson-founded technical-mountain-and-town outerwear, the recognized Stio Cottonwood spring-overshirt + Stio Cobble Run cotton button-down register), Mountain Khakis (Glenwood Street since 2003), Jackson Hole Hat Company (Cache Street custom-cowboy hatter since 2002), the heritage MADE (Roxanne Wilson's contemporary-craft Glenwood Street). Heritage anchors: the heritage National Elk Refuge (24,700-acre Refuge — May reads spring-elk-calving-and-migration register), the heritage Snake River runoff opens (May rafting-and-fishing season opener at the heritage Snake River below the Snake River Dam at Moose), Town Square (Jackson Hole Rotary archways since 1953), Cowboy Bar (1937). Festivals: Old West Days (mid-May — the heritage 1985-founded festival with Jackson Hole Shootout reenactment at Town Square + Western-music programming + Old West Days Parade through downtown Jackson).
Jackson Hole May is Snake River dawn-float at 6am, National Elk Refuge spring-elk by 9, Town Square arches at 11, Cowboy Bar by 17, Snake River Brewing by 19. Lightweight wool + Mountain Khakis canvas + R.M. Williams + Pendleton blanket scarf.
The capsule
- Lightweight wool layer + cotton long-sleeve tunic — NOAA Jackson WY logs 16°C / 61°F afternoons in May with 0°C / 32°F mornings. Lightweight wool layer (Brunello Cucinelli or Naadam Mongolian-cashmere quarter-zip) over cotton long-sleeve tunic in cocoa, oat, sage, or terracotta. Skip lightweight cotton-only — 16°C / 29°F diurnal swing fails on single-layer.
- Mountain Khakis Original Mountain canvas pant + Stio Cottonwood overshirt — Mountain Khakis (Jackson WY-founded heavyweight-canvas pants since 2003) Original Mountain pant in walnut, sand, or oxblood. Stio Cottonwood overshirt (the heritage Stio fall-and-spring transitional cotton-twill workwear) in cocoa, sand, or oxblood layers over the Mountain Khakis canvas + cotton long-sleeve base.
- R.M. Williams Comfort Craftsman boot or Hoka Speedgoat 5 trail shoe — Jackson Hole May daytime walking demands closed-toe leather or trail shoe. R.M. Williams Comfort Craftsman (Adelaide 1932) in chestnut or oxblood for Town Square + Cowboy Bar register. Hoka Speedgoat 5 (5mm-lug Vibram Megagrip) for the heritage Grand Teton early-spring trail register + Snake River-bank walking. Skip open-toe sandal — Jackson-grit + Snake River silt.
- Patagonia Houdini packable rain shell + Patagonia Nano Puff vest underneath — NOAA logs 11 precipitation days through May. Patagonia Houdini (3.7 oz nylon ripstop) packs to fist-size. Patagonia Nano Puff vest (60g PrimaLoft) for the heritage 6am Snake River dawn-float + the heritage National Elk Refuge spring-elk-overlook 7:00am cold-start register.
- Lightweight wool gloves + lightweight wool buff for sunrise — NOAA logs 0°C / 32°F overnight lows through May; the heritage 6am Snake River dawn-float + 7am National Elk Refuge spring-elk-overlook reads 0°C / 32°F. Lightweight wool gloves (Smartwool merino glove-liner) + lightweight wool buff.
- Pendleton wool blanket scarf + Stio Hometown Down jacket — for evening — The heritage Cowboy Bar saddle-stool register + Snake River Brewing wood-deck + Wort Hotel Silver Dollar Bar evening register reads Pendleton wool blanket scarf (the heritage 1909 Pendleton Woolen Mills Native-American-blanket pattern in cocoa, navy, oxblood, or sage), with Stio Hometown Down jacket (Stio's 700-fill responsibly-sourced down) for the recognized evening-cold register. Sunset drops 16°C / 29°F — temperatures hit 4-6°C / 39-43°F by 21:00.
- Jackson Hole Hat Company Stetson 100X felt cowboy hat + Persol polarized — Jackson Hole Hat Company (Cache Street custom-cowboy hatter since 2002) custom-shapes a Stetson 100X open-crown beaver felt in cocoa, sand, or ivory — the recognized Jackson-après-spring crown at the heritage Cowboy Bar saddle-stool. Persol 714 SM (Steve McQueen Venice, polarized) or Vuarnet 003 Skilynx for the recognized Snake River + National Elk Refuge dawn-glare register.
- Crossbody bag + cash USD + 1L water + binoculars + bear spray — Jackson Hole daytime walking demands hands-free for Town Square + Cowboy Bar + Snake River Brewing + the heritage National Elk Refuge spring-elk-overlook. Crossbody. Cash USD for the heritage Jackson Hole Saturday People's Market (Pearl Street May-September). Binoculars (Leica or Swarovski 8x42 or 10x42) for National Elk Refuge spring-elk + Grand Teton wildlife-corridor register. Bear spray (Counter Assault or UDAP, $50 at Jack Dennis Outdoor Shop) — both grizzly + black bear active in Grand Teton + Bridger-Teton National Forest May onward.
Day to night
Lightweight wool layer + cotton long-sleeve tunic + Mountain Khakis Original Mountain canvas + Stio Cottonwood overshirt · Hoka Speedgoat 5 or R.M. Williams Comfort Craftsman · lightweight wool gloves + buff at sunrise · Patagonia Nano Puff vest + Houdini packable shell · 1L water + cash USD + binoculars + bear spray. Snake River dawn-float 6:00am, National Elk Refuge spring-elk-overlook 7:00, Town Square arches 11:00.
Pendleton wool shirt-jacket + cashmere knit + Mountain Khakis canvas · Stio Hometown Down jacket · R.M. Williams Comfort Craftsman boot · Jackson Hole Hat Co. Stetson 100X felt cowboy hat · Pendleton wool blanket scarf · clutch or crossbody. Cowboy Bar saddle-stool 17:00, Snake River Brewing wood-deck dinner 19:00, Hand Fire Pizza 21:00, the heritage Million Dollar Cowboy Bar second-stop 22:30.
What to avoid
- Lightweight cotton-only — diurnal swing 16°C / 29°F
- Open-toe sandal — Jackson-grit + Snake River silt + spring-mud
- White denim — Snake River silt + Jackson-grit
- Umbrellas — wind on Snake River corridor inverts
- Snake River dawn-float without bear spray + binoculars
- JAC arrival in west-wind storm — flights divert IDA or SLC
Frequently asked questions
Per NOAA Jackson station: average daily high 16°C (61°F), low 0°C (32°F), 11 precipitation days. UV index 9 by 11am. Daylight 15h 5m. The 16°C / 29°F diurnal swing means morning Snake River dawn-float 6:00am reads 0°C / 32°F + afternoon Town Square walking reads 16°C / 61°F + evening Cowboy Bar saddle-stool reads 4-6°C / 39-43°F by 21:00.
Yes — May is recognized peak-Snake-River-runoff-opener (the heritage 'Snake River whitewater season' opens late May with the heritage Hoback Junction whitewater section + Moose-to-Wilson scenic float reopening). The heritage Snake River raft operators below the Snake River Dam at Moose Junction: Barker-Ewing Scenic (the heritage 1963 family-owned operator), Solitude Float Trips, Triangle X Ranch (the heritage 1926 working dude-ranch float-operator), Mad River Boat Trips (Hoback Junction whitewater alternative — Class III rapids on the Snake River below the Hoback). Cost: $80-150 per person for the standard 10-mile Moose-to-Wilson scenic float (4 hours). Pack: Stio Cobble Run cotton + Mountain Khakis canvas + Stetson Open Road straw hat + Persol polarized + mineral SPF 50 + Patagonia Houdini packable shell + Hoka Speedgoat or Teva or Chaco rugged-leather sandal. Skip cotton-only base layer — Snake River-glacial-fed cold splashes 5°C / 41°F water on the legs.
Old West Days is the heritage mid-May Jackson-cultural-anchor festival (the heritage 1985-founded festival with the heritage Jackson Hole Shootout reenactment at Town Square + Western-music programming + the heritage Old West Days Parade through downtown Jackson). The recognized programming: Jackson Hole Shootout reenactment (Town Square — recognized 'Wild West' shootout reenactment 6:00pm Memorial Day weekend through Labor Day weekend), Old West Days Music Festival (Snow King Mountain venue), Old West Days Parade (Saturday morning through downtown Jackson). The heritage 2026 Old West Days runs mid-May (verify at oldwestdays.com). Free admission to most programming. Pack: Mountain Khakis canvas + Filson Mackinaw flannel + R.M. Williams Comfort Craftsman + Jackson Hole Hat Co. Stetson 100X felt + Stio Cottonwood overshirt + cash USD.
Yes — but plan for spring-shoulder-trail-conditions absolutely. The heritage Grand Teton National Park opens for full-season spring access in May. Higher-elevation trails (Cascade Canyon, Inspiration Point, Lake Solitude, Death Canyon) typically snow-bound through mid-June; lower-elevation trails (Jenny Lake loop, Phelps Lake loop, Taggart Lake, Bradley Lake) open by mid-May. The heritage Jenny Lake boat-shuttle (the heritage 1929 boat-shuttle operates Memorial Day weekend through late September). Pack: Stio Cottonwood overshirt + Mountain Khakis canvas + Hoka Speedgoat 5 + lightweight wool layer + Patagonia Houdini packable shell + Patagonia Nano Puff vest + Stetson Open Road straw + 2L hydration + bear spray + cash USD + Grand Teton Park-Pass ($35 per vehicle, $20 per pedestrian).
The heritage Million Dollar Cowboy Bar (Cache Street since 1937); the heritage Snake River Brewing (East Broadway since 1994 — the recognized Pako's IPA + Zonker Stout); the heritage Hand Fire Pizza (Glenwood Street); the heritage Wort Hotel Silver Dollar Bar (Glenwood Street, 1941 Wort Hotel); the heritage Glorietta (East Broadway contemporary-Italian, since 2018); the heritage Persephone Bakery (East Broadway French-bakery + breakfast); 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 Mangy Moose (Teton Village base since 1967); the heritage Dornan's at Moose (since 1948 — the heritage Dornan's Wine Shoppe + Pizza Pasta Company). Pack: Mountain Khakis canvas + Filson Mackinaw flannel + R.M. Williams Comfort Craftsman + Jackson Hole Hat Co. Stetson 100X felt + Stio Hometown Down jacket + Pendleton wool blanket scarf for evening.
