Glacier National Park Climate and Average Weather
Climate of Glacier National Park: average temperatures, rainfall and seasons month by month.
Climate in Glacier National Park month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 22° | 12° | 2,7 in | ★★☆☆☆ |
| February | 25° | 12° | 3,1 in | ★★☆☆☆ |
| March | 33° | 19° | 4,6 in | ★☆☆☆☆ |
| April | 40° | 24° | 3,1 in | ★★☆☆☆ |
| May | 49° | 33° | 4,1 in | ★★★☆☆ |
| June | 56° | 39° | 5,2 in | ★★★☆☆ |
| July | 71° | 51° | 2,4 in | ★★★★☆ |
| August | 68° | 49° | 2,3 in | ★★★★☆ |
| September | 62° | 45° | 2,0 in | ★★★★☆ |
| October | 44° | 30° | 2,4 in | ★★★☆☆ |
| November | 31° | 20° | 4,4 in | ★☆☆☆☆ |
| December | 29° | 20° | 5,4 in | ★☆☆☆☆ |
Climate type: Subarctic. Source: Open-Meteo archive (ERA5).
Recent extremes in Glacier National Park
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Glacier National Park compares with nearby places
Annual averages, and the difference against Glacier National Park.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Calgary | 158 mi | 41°F | +36°F warmer | 20 in |
| Missouri River | 171 mi | 46°F | +41°F warmer | 16 in |
| Dinosaur Provincial Park | 173 mi | 43°F | +38°F warmer | 17 in |
| Banff | 185 mi | 36°F | 33°F cooler | 20 in |
| Canadian Rocky Mountain Parks | 212 mi | 29°F | 40°F cooler | 24 in |
Best time to visit Glacier National Park
Go in July and August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: March, November and December - expect the least comfortable mix of heat, cold or rain.
What this means for Glacier National Park
Today is warmer than average for August. The forecast high of 81°F is 12.6°F above the 68°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 76°F.
What to pack, what to skip
- Sunglasses, a brimmed hat and SPF 30+
- Layers - the daily swing is 69°F, so mornings feel nothing like afternoons
- If your dates are flexible, avoid March, November and December - historically the least comfortable months here.
Summary
Glacier National Park is a national park in Montana. Glacier National Park is a US national park known for Going-to-the-Sun Road and alpine lakes.
Right now it is 58°F (14°C) in Glacier National Park with clear. It feels like 49°F. Today runs from 56°F to 81°F. Chance of precipitation is 1%. Sightseeing conditions score 8.9/10 - excellent - go now.
The best time to visit Glacier National Park is July and August. The climate is subarctic. March, November and December tend to be the least comfortable months. July is the warmest month with average highs near 71°F, while January is the coldest with lows near 12°F.
Nearby highlights include Missouri River, Dinosaur Provincial Park, Canadian Rocky Mountain Parks and Banff National Park.
In plain terms. Today is warmer than average for August. The forecast high of 81°F is 12.6°F above the 68°F typical for this month. The best window to be outside is roughly 10 AM to 1 PM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in Glacier National Park today at 10/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Glacier National Park
| Type | National park |
|---|---|
| State | Montana |
| Country | United States |
| Continent | North America |
| Coordinates | 48°45′34.6″N 113°47′13.2″W (48.7596, -113.787) |
| Established | 1910 |
| Known for | Going-to-the-Sun Road and alpine lakes |
| Local time | 1:44 AM (UTC-06:00) |
| Best months | July and August |
| Climate | Subarctic |
Weather map for Glacier National Park
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Glacier National Park
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Glacier National Park?
Glacier National Park is a national park in Montana. Its coordinates are 48.7596, -113.787. It lies in North America.
What is the weather like in Glacier National Park right now?
It is currently 58°F (14°C) with clear. Humidity is 64% and wind is 17 mph.
When is the best time to visit Glacier National Park?
July and August offer the most comfortable conditions in Glacier National Park, which has a subarctic climate. March, November and December are usually the hardest months for outdoor plans.
What time zone is Glacier National Park in?
Glacier National Park observes America/Denver (UTC-06:00). The local time is 1:44 AM.
What are the top things to do in Glacier National Park?
Popular options include Missouri River, Dinosaur Provincial Park, Canadian Rocky Mountain Parks, Banff National Park, Lake Louise and Lake Louise.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (national-parks) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 21, 2026 at 1:44 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
