Late summer · Weather & things to do
Glacier National Park in August
Little changes in Glacier National Park from July: highs stay near 69°F (21°C), lows near 45°F (7°C), and about 1.7 in (42 mm) of rain falls.
At 95/100 for comfort (2nd of 12), it's one of the best months to visit.
- Avg high
- 69°F (21°C)
- Avg low
- 45°F (7°C)
- Rain
- 1.7 in (42 mm)
- Humidity
- 63%
- Cloud cover
- 45%
- Daylight
- ~14 h 10 min
- Comfort score
- 95/100 · Great
What August feels like
Days are mild at around 69°F (21°C): comfortable for walking all day, with a layer for the evening.
There's a big swing between day and night, about 13°C (24°F), so mornings and evenings feel much cooler than the afternoon.
Rain is moderate at about 1.7 in (42 mm) for the month.
Plan around August
August is one of Glacier National Park's best months on the climate data.
- Last of the best-scoring months: by September, the score drops to 81/100.
- Comfort holds steady from July (97 → 95/100).
- August sits inside the Jun – Sep window our Glacier to Yellowstone route recommends.
What to pack for August
- A warm layer for eveningslows near 45°F
- Comfortable walking shoesmost picks involve some walking
What to do in Glacier National Park in August
August is good outdoor weather here, so these picks lean toward the open air.
Grinnell Glacier Trail
Steep Many Glacier hike past turquoise lakes to the foot of Grinnell Glacier.
Why now Our curated notes say it's best late Jul–Sep.
Highline Trail
Ledge trail along the Garden Wall from Logan Pass with huge valley views.
Why now Our curated notes say it's best Jul–Sep.
Russell's Fireside Dining Room
Lake McDonald Lodge dining room with regional dishes like bison and huckleberry desserts.
Why now August scores 95/100 for comfort, good conditions for being outside.
Northern Lights Saloon
Log-cabin saloon next to the Mercantile, with a beer garden facing the peaks.
Why now Highs near 69°F and 1.7 in of monthly rain make this an easy outdoor pick.
Polebridge Mercantile
1914 general store and bakery in the North Fork, known for huckleberry bear claws.
Nearby in August
- Banff in August~185 mi · highs 68°F, 2.5 in rain · similar daytime temperatures, wetter
- Lake Louise in August~212 mi · highs 65°F, 2.8 in rain · 3°C (5°F) cooler by day, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Glacier National Park in August: quick answers
Is August a good time to visit Glacier National Park?
Yes. On the climate data it's one of the best months, scoring 95/100. Expect highs of 69°F (21°C) and 1.7 in (42 mm) of rain. August is inside the Jun – Sep window our Glacier to Yellowstone route recommends.
How hot is Glacier National Park in August?
Average highs are 69°F (21°C) and average lows 45°F (7°C), making it the 2nd-warmest month by daytime highs.
Does it rain a lot in Glacier National Park in August?
Not much: about 1.7 in (42 mm) of rain falls across August on average, the 2nd-driest month of the year. The annual total is about 31.6 in (802 mm).
What should I pack for Glacier National Park in August?
Bring a warm layer for evenings (lows near 45°F) and comfortable walking shoes (most picks involve some walking).
More on Glacier National Park
Routes in season in August
- Glacier to Yellowstone Jun – Sep
Planning Glacier National Park in August?
Share this August plan with your group, poll everyone on dates and keep the packing list in one place.