Late summer · Weather & things to do
Grand Teton National Park in August
Little changes in Grand Teton National Park from July: highs stay near 76°F (24°C), lows near 48°F (9°C), and about 1.4 in (36 mm) of rain falls.
At 96/100 for comfort (2nd of 12), it's one of the best months to visit.
- Avg high
- 76°F (24°C)
- Avg low
- 48°F (9°C)
- Rain
- 1.4 in (36 mm)
- Humidity
- 50%
- Cloud cover
- 42%
- Daylight
- ~13 h 49 min
- Comfort score
- 96/100 · Great
What August feels like
Warm afternoons near 76°F (24°C) make long days outdoors easy.
Mornings start much cooler: lows average 48°F (9°C), about 15°C (27°F) below the afternoon high.
Rain is moderate at about 1.4 in (36 mm) for the month.
Plan around August
August is one of Grand Teton National Park's best months on the climate data.
- Last warm month for a while: September highs fall to 65°F.
- Comfort holds steady from July (97 → 96/100).
- August sits inside the Jun – Sep window our Glacier to Yellowstone route recommends.
- Our Grand Teton, Jackson & Yellowstone route recommends Mid-Dec – Mar, so August falls outside its suggested window.
What to pack for August
- Light, breathable clotheshighs average 76°F
- Sunscreen, sunglasses and a hatstrong sun this month
- A warm layer for eveningsnights drop to 48°F
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Grand Teton National Park in August
With conditions on your side, the picks below favor time outside.
Million Dollar Cowboy Bar
Jackson's town-square saloon since 1937, with saddle barstools and live country music.
Why now August scores 96/100 for comfort, good conditions for being outside.
Snake River Overlook
Pullout on US-89 above a bend of the Snake River, where Ansel Adams photographed the Tetons in 1942.
Why now Highs near 76°F and 1.4 in of monthly rain make this an easy outdoor pick.
Oxbow Bend
Slow Snake River bend reflecting Mount Moran, with moose and pelicans.
Why now One to do outside while the weather is on your side.
Blue Heron Lounge
Jackson Lake Lodge bar with big windows over Willow Flats and Mount Moran.
Jenny Lake Boating Shuttle
Boat across Jenny Lake to the Hidden Falls and Inspiration Point trails.
Taggart Lake Trail
Gentle 3-mile round trip through meadows to a lake at the base of the Grand Teton.
Nearby in August
- Jackson in August~22 mi · highs 80°F, 1.2 in rain · 3°C (5°F) warmer by day, about as wet
- Yellowstone National Park in August~44 mi · highs 71°F, 1.6 in rain · 3°C (5°F) cooler by day, about as wet
- Yellowstone in August~57 mi · highs 71°F, 1.6 in rain · 3°C (5°F) cooler by day, about as wet
- Salt Lake City in August~218 mi · highs 90°F, 0.9 in rain · 8°C (15°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~2,462 m to Grand Teton National Park's ~2,122 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Grand Teton National Park in August: quick answers
Is August a good time to visit Grand Teton National Park?
Yes. On the climate data it's one of the best months, scoring 96/100. Expect highs of 76°F (24°C) and 1.4 in (36 mm) of rain. August is inside the Jun – Sep window our Glacier to Yellowstone route recommends.
How hot is Grand Teton National Park in August?
Average highs are 76°F (24°C) and average lows 48°F (9°C), making it the 2nd-warmest month by daytime highs.
Does it rain a lot in Grand Teton National Park in August?
Not much: about 1.4 in (36 mm) of rain falls across August on average, the 2nd-driest month of the year. The annual total is about 30.9 in (785 mm).
What should I pack for Grand Teton National Park in August?
Bring light, breathable clothes (highs average 76°F), sunscreen, sunglasses and a hat (strong sun this month), a warm layer for evenings (nights drop to 48°F) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on Grand Teton National Park
Routes in season in August
- Glacier to Yellowstone Jun – Sep
Planning Grand Teton National Park in August?
Share this August plan with your group, poll everyone on dates and keep the packing list in one place.