Grand Teton in August: Crowds, Weather & What to Pack
Peak crowds · VisitWhen score 65/100 · #8 of 12 months
August is peak season — expect the year's biggest crowds 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).
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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).
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).
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.
See also: the best national parks to visit in August · Last verified 2026-09-24