Jackson Hole in July is peak Grand Teton hike + Hootenanny — 26°C / 79°F afternoons, 5°C / 41°F mountain nights, 7 rain days from the afternoon-thunderstorm pattern.
Jackson Hole in July runs Greater Yellowstone peak-summer-mountain. NOAA Jackson WY data put afternoon highs at 26°C / 79°F and overnight lows at 5°C / 41°F with 7 precipitation days (the heritage afternoon-thunderstorm pattern that hits 14:00-17:00 daily, the recognized Teton Range orographic-lift summer-storm pattern). Mountain summer reads cool: a heritage 21°C / 38°F drop after sunset at 6,200-13,775 ft elevation. UV index 11 (extreme) by 10am — alpine-tundra reflectance at the heritage Cascade Canyon + Lake Solitude + the heritage Jenny Lake dock doubles UV exposure at altitude. The dressing register reads layered: lightweight cotton or linen for daytime hike to the heritage Jenny Lake + Cascade Canyon + the heritage Inspiration Point overlook, the heritage Lake Solitude (8.6-mile out-and-back), Hidden Falls (the heritage 0.5-mile from Jenny Lake boat-shuttle dock), and the heritage Death Canyon (8-mile out-and-back). Evening reads cashmere wrap over linen at the heritage Mangy Moose at Teton Village + the heritage Dornan's at Moose (the heritage Hootenanny on Mondays at the heritage Dornan's open-mic — the recognized 60-year-old Jackson-Wilson-Moose-corridor Monday-night live-folk-music register). Local register: Stio (East Broadway — the recognized Stephen Sullivan Jackson-engineered cotton button-down + Stio Cobble Run hiking-pant), Mountain Khakis (Glenwood Street since 2003 — the recognized heritage canvas pant in summer-weight cotton), the heritage Made (Roxanne Wilson's contemporary-craft Glenwood Street — the heritage Wyoming-craft-jewelry register), Jackson Hole Buffalo Meat Co. (souvenir-edible register). Heritage anchors: Grand Teton National Park (the heritage 1929 establishment, the heritage Jenny Lake boat-shuttle since 1929, the heritage Mt. Moran 12,605 ft / 3,842 m anchor of the Cathedral Group), the heritage Hootenanny at Dornan's (Mondays at Moose, the heritage 60-year-old open-mic), the heritage Snake River fly-fishing (the recognized cutthroat-trout fishery, the heritage Jack Dennis Fly Shop on Cache Street since 1967), the heritage Town Square arches (since 1953), the heritage Snake River Float (multiple operators below the Snake River dam at Moose). Skip heavy wool — daytime 26°C / 79°F at altitude.
Jackson Hole July is Cascade Canyon at 7am, Jenny Lake boat shuttle at 11, Snake River Brewing wood-deck by 17, Hootenanny at Dornan's by 19. Stio cotton + Mountain Khakis canvas + Hoka Speedgoat + cashmere wrap. Skip heavy wool.
Stio Cobble Run cotton button-down + Mountain Khakis Cobalt canvas + Hoka Speedgoat 5 · Stetson Open Road straw hat · Persol polarized · Patagonia Houdini packable shell + Stio Hometown Down vest · 2L water bottle + bear spray + daypack. Cascade Canyon trailhead at Jenny Lake boat-shuttle 7:00am, Inspiration Point 9:30, Hidden Falls return 13:00, Persephone Bakery lunch 14:00.
Cotton midi or Stio cotton button-down + Mountain Khakis canvas · Loro Piana cashmere wrap · leather sandals or block heel · cotton silk scarf · crossbody. Snake River Brewing wood-deck 17:00, Hand Fire Pizza dinner 18:30, Hootenanny at Dornan's 19:00 (open-mic finale 22:30, 25-min drive Wilson-to-Moose).
Per NOAA Jackson WY data: average daily high 26°C (79°F), low 5°C (41°F), 7 precipitation days (the heritage afternoon-thunderstorm pattern, 14:00-17:00 daily, the recognized Teton Range orographic-lift summer-storm pattern). Mountain summer is cool — the 21°C / 38°F drop after sunset at 6,200-13,775 ft elevation. UV index 11 (extreme) by 10am, doubled via alpine-tundra reflectance to UV 18 equivalent at Cascade Canyon + Lake Solitude. Daylight 15h 20m. The diurnal swing of 21°C / 38°F means morning lightweight cotton + afternoon hike layered + evening cashmere wrap at Hootenanny.
Jenny Lake + Hidden Falls (the heritage 0.5-mile from the heritage 1929 boat-shuttle dock at Jenny Lake — the recognized 'first Grand Teton hike' for visitors); Inspiration Point (the heritage 1-mile climb from Hidden Falls — the recognized Cathedral Group photographic overlook); Cascade Canyon (the heritage 4.5-mile out-and-back from Inspiration Point into the canyon — the recognized Grand Teton-day-hike anchor with the heritage Mt. Owen + Grand Teton + Mt. Teewinot ridge views); Lake Solitude (the heritage 8.6-mile out-and-back, the recognized all-day hike to alpine cirque-lake at 9,035 ft); Death Canyon (8-mile out-and-back from the heritage 1925 White Grass Ranch trailhead); Phelps Lake loop (5-mile loop from the heritage Laurance S. Rockefeller Preserve — the recognized contemplative-hike alternative). Pack: Hoka Speedgoat 5 + Stio Cobble Run + Mountain Khakis Cobalt canvas + bear spray + Patagonia Houdini packable shell + 2L water + mineral SPF 50.
The heritage Hootenanny at Dornan's is the heritage 60-year-old Jackson-Wilson-Moose-corridor Monday-night open-mic at the heritage Dornan's open-air deck overlooking the Snake River + the Cathedral Group of the Grand Teton (Moose, 13 miles north of Jackson — the heritage 1948 Dornan's family-owned restaurant + bar + RV park complex at the heritage Moose Junction inside Grand Teton National Park). Mondays 7-10pm June through early September (verify exact dates at dornans.com — the heritage 'Hootenanny' is occasionally moved to Wednesday for special bookings). Free admission. The heritage open-mic register: anyone can sign up, the recognized Jackson-folk-music house-band leads house-style. Pack: cotton midi or Stio cotton button-down + Mountain Khakis canvas + Loro Piana cashmere wrap + leather sandal — sunset drops 21°C / 38°F by the 22:30 finale. Order the heritage Dornan's Pizza + a Snake River Lager or a Roadhouse Brewing IPA from the bar. The heritage 25-minute drive from Jackson Town Square to Moose via Highway 191 + Moose Junction.
Yes — the heritage Snake River Float is the recognized signature Jackson-summer-on-the-water register. The heritage Snake River Float operators below the Snake River dam at Moose Junction: Barker-Ewing Scenic (the heritage 1963 family-owned operator, the recognized Snake-River-Float anchor); Solitude Float Trips (the heritage Wyoming-fly-fishing-operator alternative); Triangle X Ranch (the heritage 1926 working dude-ranch float-operator); Mad River Boat Trips (Hoback Junction whitewater alternative — Class III rapids on Snake River below the Hoback). Standard 10-mile Moose-to-Wilson scenic float runs 4 hours; pack: Stio Cobble Run + Mountain Khakis canvas (water-resistant cotton) + Stetson Open Road straw hat + Persol polarized + mineral SPF 50 + Patagonia Houdini packable shell + Hoka Speedgoat or Salomon Sense Ride (sandal alternative — Teva or Chaco rugged-leather alternative). Skip cotton-only base layer — the heritage Snake River-glacial-fed cold splashes 5°C / 41°F water on the legs. Bring 1L hydration + UV-protective sunglasses (Persol or Maui Jim polarized).
The heritage Snake River Brewing (East Broadway since 1994 — the heritage Wyoming-craft-brewery anchor, the recognized Pako's IPA + Zonker Stout + the heritage Snake River Lager). The heritage Million Dollar Cowboy Bar (Cache Street since 1937 — the heritage 'Million Dollar Cowboy Bar' silver-dollar-inlay register). 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 recognized Jackson-grass-fed-beef + Wyoming-trout register). The heritage Mangy Moose (Teton Village base since 1967 — the recognized Teton Village après-hike anchor + Mondays 'Mangy Mondays' deals). The heritage Dornan's at Moose (since 1948 — the heritage Hootenanny Mondays + the heritage Dornan's Wine Shoppe). The heritage Jenny Lake Lodge dining room (the heritage 1924 lodge inside Grand Teton National Park — the recognized Grand Teton-fine-dining anchor, the heritage 6-course tasting menu, jacket required). Pack: cotton midi or Stio cotton button-down + Mountain Khakis canvas + Loro Piana cashmere wrap + leather sandal or block heel for evening; cotton button-down + cotton chino + Hoka Speedgoat for daytime.