Glacier in August: Crowds, Weather & What to Pack
Peak crowds · VisitWhen score 67/100 · #4 of 12 months
August is peak season — expect the year's biggest crowds at Glacier National Park: crowds run 91% of the July peak (693,318 average visits), days average 73°F with 14.4 hours of daylight. Computed from NPS and NOAA data.
Crowds in August
Glacier averages 693,318 recreation visits in August — 91% 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 73°F), and mornings are chilly (lows average 45°F). It is typically dry (1.3″ of precipitation). Mid-month daylight runs 14.4 hours.
NOAA 1991–2020 monthly normals, station ST. MARY 1 SSW, MT US (17 mi from park coordinates, 4,555 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of August.
What to pack for Glacier in August
Computed from the month's weather normals above — not a generic list.
- Warm mid-layer (fleece or light puffy) — mornings average 45°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)
Want quieter or kinder conditions? The computed best months for Glacier are June and September.
Common questions
Is Glacier crowded in August?
Yes — August runs 91% of Glacier's peak, averaging 693,318 recreation visits (NPS, 2021–2025).
What is the weather like in Glacier in August?
Average highs of 73°F, lows of 45°F, 1.3″ of precipitation (NOAA 1991–2020 normals, ST. MARY 1 SSW, MT US station).
What should I pack for Glacier 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 2026-07-16