United States · Climate data from NOAA
Jackson Hole dresses for a -14°C–26°C / 7°F–79°F window across the months we cover. Jackson Hole runs Greater Yellowstone heritage-cowboy — the heritage Teton County valley named for fur trader Davey Jackson (1829) at the foot of the Grand Teton (13,775 ft / 4,199 m), the heritage 1929 Grand Teton National Park, and the heritage 1965 Jackson Hole Mountain Resort in Teton Village. Per NOAA Jackson WY station (~6,200 ft / 1,890 m), January–February afternoons sit at -3°C / 26°F with overnight lows -14°C / 6°F and the heritage 459 inches annual Teton Village snowfall; July afternoons hit 26°C / 79°F with 5°C / 41°F mountain nights, and the September elk-bugling shoulder reads 20°C / 68°F afternoons + 0°C / 32°F nights. Local register: Jackson Hole Hat Company (the heritage Cache Street custom-cowboy hatter), Stio (the heritage 2012 Jackson-founded technical-mountain-and-town outerwear, on East Broadway), Mountain Khakis (the heritage Jackson-founded heavyweight-canvas pants on Glenwood Street), Roadhouse Brewing + Snake River Brewing apparel, Jackson Mercantile + Jackson Hole Buffalo Meat Co. + the heritage MADE (Roxanne Wilson's contemporary-craft Glenwood Street). Heritage anchors: the four-elk-antler arches of Town Square (the heritage Jackson Hole Rotary archways since 1953), Cowboy Bar (the heritage 1937 saddle-stool bar on Cache Street), Snake River Lodge + Spa, the heritage National Museum of Wildlife Art (overlooking the heritage National Elk Refuge — the recognized 24,700-acre wintering ground for 7,000–10,000 elk). Festivals: Hootenanny (Mondays at Dornan's, the heritage Moose-Wilson-corridor open-mic), Jackson Hole Fall Arts Festival (early September), the heritage Pole-Pedal-Paddle (early April). Skip white denim and flat-soled urban shoes — Jackson is gravel-and-snow-and-mud nine months of the year.
Across the 4 months we cover: morning lows from -14°C / 7°F (January) to afternoon highs of 26°C / 79°F (July).
What to wear in Jackson Hole in January 2026: NOAA Jackson data (-3°C / 26°F afternoons, -14°C / 6°F nights, 80+ inches snowfall), peak Teton Village ski.
What to wear in Jackson Hole in July 2026: NOAA Jackson data (26°C / 79°F afternoons, 5°C / 41°F nights), peak Grand Teton hike season + Hootenanny at Dornan's.
What to wear in Jackson Hole in September 2026: NOAA Jackson data (20°C / 68°F afternoons, 0°C / 32°F nights), peak elk-rut bugling + Jackson Hole Fall Arts Festival.
What to wear in Jackson Hole in December 2026: NOAA Jackson data (-3°C / 26°F afternoons, -14°C / 7°F nights, 90+ inches snowfall), peak Cowboy Christmas + holiday ski.
The neighborhood you sleep in affects what reads as appropriate more than the calendar does. Jackson Hole's style scene anchors on the districts below — each leaf page calls out the local register (smart-casual, undone, technical, party) so the capsule maps to the streets you'll actually walk on.
Every leaf page on this hub is built from four data layers: climate normals from NOAA; named-authority etiquette and style references (Vogue, Condé Nast Traveler, Business of Fashion, the relevant local press); resident write-ups and traveler-forum reports for the failure modes tourists get wrong; and the editorial avatar pool that visualises each capsule on a person rather than a moodboard. Every DO names a reason. Every DON'T names a failure mode. We retest before each seasonal refresh — the editorial-modified date at the bottom of each leaf is the receipt.
Climate numbers come from NOAA — the national meteorological service for United States. Daily highs and lows, rain days, and daylight hours are 1991-2020 normals (the international standard, refreshed every decade). Capsule pieces and what-to-avoid notes are stress-tested against Jackson Hole resident write-ups, named-stylist sources where the city has a documented uniform (Vogue Paris under Emmanuelle Alt for Paris, Vogue Japan and i-D Tokyo coverage for Tokyo, NYMag's The Cut for New York), and the failure modes locals actually flag in city forums and traveler reports.
Because the morning-low to afternoon-high swing inside one Jackson Hole month already changes the silhouette — and the swing between months is much bigger than that. January mornings start at -14°C / 7°F; July afternoons hit 26°C / 79°F. A single packing list that tries to span both ends up wrong at both. Each month here is a different capsule, calibrated to the climate band that actually shows up on the ground.
4 so far: January, July, September, December. We ship climate-and-event-distinct months only — adjacent months that share more than 60% of the same capsule pieces don't get separate pages, because near-identical leaves erode the credibility of every other page on the site. The full coverage plan is in our internal CLAUDE.md (the editorial brief governs every page that ships).
NOAA 1991-2020 normals are the version cited on every leaf — the international meteorological standard, updated by every national service every decade. We restate the numbers as raw averages on the leaf pages ("26°C / 79°F afternoons") rather than the year range, so the figures don't read as stale. The next normals refresh covers 2001-2030 and lands in 2031 — we'll bump every page when it does.
Editorial rule, enforced in CI: every DO line names a specific reason ("merino sinks under a trench so a damp morning doesn't show through your knit"); every DON'T names a specific failure mode ("suede stains the first time light drizzle catches it"). We ban "timeless," "elevate your style," "must-have," and "effortless" — they're the giveaway phrases of generic AI fashion writing. If a sentence could open any city's guide, it gets cut. Jackson Hole's guide reads like Jackson Hole, not like a packing-list aggregator.