Grand Teton in August: Crowds, Weather & What to Pack
Peak crowds · VisitWhen score 65/100 · #8 of 12 months
August is peak season — the 2nd-busiest month of the year, at Grand Teton National Park: crowds run 92% of the July peak (672,439 average visits). Weather: highs average 76°F and lows 40°F, with 1.3″ of precipitation and 14 hours of daylight. Computed from NPS and NOAA data.
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Bring for Grand Teton in August
- Warm mid-layer (fleece or light puffy)See it on AmazonWhy: mornings average 40°F.
- Bear spraySee it on AmazonWhy: recommended by the park in grizzly country (check current park regulations before you carry).
- Sturdy, broken-in hiking bootsSee it on AmazonWhy: every park, every month.
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Grand Teton in August: what the park service says
August is the one stretch when every Grand Teton campground on the park's list is open at once. In 2026 the shortest seasons were Colter Bay Tent Village (May 22 to September 7) and Lizard Creek (June 12 to September 13), and Jenny Lake and Colter Bay campgrounds closed on September 27. If you are planning late August, note that the Colter Bay Visitor Center closes at the end of September, earlier than Craig Thomas in Moose (October 31).
Source: NPS, checked 2026-11-05.
Crowds in August
Grand Teton averages 672,439 recreation visits in August — 92% of what July, the peak month, draws. That crowd level sets the tone for parking, permits and lodging — book early and start days at dawn.
Weather & daylight
Days are pleasant (highs average 76°F), and mornings are chilly (lows average 40°F). It is typically dry (1.3″ of precipitation). Mid-month daylight runs 14 hours.
NOAA 1991–2020 monthly normals, station MORAN 5WNW, WY US (6 mi from park coordinates, 6,805 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of August.
What to pack for Grand Teton in August
Computed from the month's weather normals above — not a generic list.
- Warm mid-layer (fleece or light puffy) — mornings average 40°F
- Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month
- Bear spray — recommended by the park in grizzly country (check current park regulations before you carry)
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Want quieter or kinder conditions? The computed best months for Grand Teton are April and May.
Also at their best in August
Other parks whose computed August verdict is a best window — same NPS × NOAA formula:
- Guadalupe Mountains in August — 28% of peak crowds, highs 84°F, score 80/100
- Lassen Volcanic in August — 56% of peak crowds, highs 78°F, score 77/100
- Bryce Canyon in August — 81% of peak crowds, highs 78°F, score 68/100
- Redwood in August — 85% of peak crowds, highs 66°F, score 67/100
Common questions
Is Grand Teton crowded in August?
Yes — August runs 92% of Grand Teton's peak, averaging 672,439 recreation visits (NPS, 2021–2025). See every month at Grand Teton.
What is the weather like in Grand Teton in August?
Average highs of 76°F, lows of 40°F, 1.3″ of precipitation (NOAA 1991–2020 normals, MORAN 5WNW, WY US station). Compare it with other national parks in August.
What should I pack for Grand Teton in August?
Warm mid-layer (fleece or light puffy); Sturdy broken-in footwear, navigation and a basic first-aid kit; Bear spray — the full weather-computed list is on this page. Going in September instead? Grand Teton in September has its own list.
See also: the best national parks to visit in August · Last verified 2026-09-24