Updated October 2026
Glacier National Park Weather by Month
Glacier National Park is warmest in July, when the nearest NOAA climate station averages a high of 80°F and a low of 50°F, and coldest in January, with an average high of 30°F and an average low of 19°F. June is the wettest month, with about 3.8 inches of precipitation. Snowfall is heaviest in January, at about 32 inches.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 15.2 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Glacier National Park can differ from these, particularly with elevation.
Warmest month
Jul
80°F avg high
Coldest month
Jan
19°F avg low
Wettest month
Jun
3.8 in avg
Snowiest month
Jan
32.0 in avg
Longest days
Jun
15.9 h of daylight
Average weather at Glacier by month
| Month | Avg high | Avg low | Precipitation | Snowfall | Daylight |
|---|---|---|---|---|---|
| January | 30°F | 19°F | 3.5 in | 32.0 in | 8.5 h |
| February | 34°F | 19°F | 2.2 in | 16.0 in | 9.9 h |
| March | 43°F | 25°F | 2.6 in | 14.0 in | 11.6 h |
| April | 53°F | 31°F | 2.2 in | 3.1 in | 13.4 h |
| May | 64°F | 39°F | 2.6 in | 0.5 in | 15.0 h |
| June | 70°F | 45°F | 3.8 in | 0.0 in | 15.9 h |
| July | 80°F | 50°F | 1.4 in | 0.0 in | 15.6 h |
| August | 79°F | 48°F | 1.2 in | 0.0 in | 14.2 h |
| September | 68°F | 41°F | 2.0 in | 0.0 in | 12.3 h |
| October | 52°F | 33°F | 3.1 in | 2.0 in | 10.5 h |
| November | 37°F | 26°F | 3.2 in | 16.2 in | 8.9 h |
| December | 29°F | 20°F | 3.2 in | 31.4 in | 8.1 h |
| Year total | 31.0 in | 115.2 in |
NOAA 1991–2020 climate normals from station USC00248809, 15.2 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Glacier is at that time of year.
Glacier weather by season
Winter: December to February
Average highs climb from 29°F in December to 34°F in February, with average lows near 19°F. The average low is at or below freezing in all three months. Together the three months average 8.9 inches of precipitation, about 29% of the yearly total and more than in any other season. Snowfall averages about 79 inches for the season. Daylight is at its shortest, about 8.1 hours in December.
Spring: March to May
Average highs climb from 43°F in March to 64°F in May, with average lows between 25°F and 39°F. The average low is at or below freezing in March and April. Together the three months average 7.4 inches of precipitation, about 24% of the yearly total. Snowfall averages about 18 inches for the season, most of it in March. Daylight lengthens from about 11.6 hours in March to 15.0 in May.
Summer: June to August
Average highs peak at 80°F in July, between 70°F in June and 79°F in August, with average lows between 45°F and 50°F. Together the three months average 6.4 inches of precipitation, about 21% of the yearly total and less than in any other season. Daylight is at its longest, about 15.9 hours in June.
Fall: September to November
Average highs fall from 68°F in September to 37°F in November, with average lows between 26°F and 41°F. The average low is at or below freezing in November. Together the three months average 8.3 inches of precipitation, about 27% of the yearly total. Snowfall averages about 18 inches for the season, most of it in November. Daylight shortens from about 12.3 hours in September to 8.9 in November.
What the National Park Service says about the weather
Glacier's weather is highly variable and can be extreme. Expect warm, sunny summer days but be ready for any type of conditions. In the winter, temperatures can fall well below freezing and typically the park receives considerable amounts of snow. Glacier's geography, straddling the Continental Divide, sets the stage for clashes of two very different climates. Warm, wet Pacific air moves in from the west, and cold, dry Arctic air flows from the northeast. They meet at the Divide.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Glacier
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 48.68°N, 113.80°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Glacier National Park →
Weather and crowds together
July is both the warmest month and the busiest, with about 3.3× the visitors of the park's average month. February is the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Glacier National Park. For hotels, cabins and rentals close to the park, see where to stay near Glacier.
Where to stay near Glacier
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Top-rated places to stay near Glacier
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Frequently Asked Questions
July is the warmest month at Glacier National Park, with an average high of 80°F and an average low of 50°F. That is the 1991–2020 average at the nearest long-record NOAA station, 15.2 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Glacier National Park, with an average low of 19°F and an average high of 30°F, based on NOAA 1991–2020 climate normals.
June is the wettest month, with about 3.8 inches of precipitation. August is the driest, at about 1.2 inches. The station records about 31 inches of precipitation in an average year.
Yes. The nearest long-record NOAA station, 15.2 miles from the park's reference point, averages about 115 inches of snow a year. January is the snowiest month, at about 32 inches. The station averages at least a tenth of an inch of snow in 8 of the 12 months.
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00248809), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1979–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.