Glacier National Park in May
In May, Glacier National Park averages a high of 64°F and a low of 39°F, with 2.6 inches of precipitation (rain plus melted snow) and 0.5 inches of snowfall. About 218,000 people visit, the 5th busiest of 12 (quiet). Days are 15 hours 13 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 64° / 39°F
- Precipitation
- 2.6in
- Snow
- 0.5in
- Daylight
- 15h 13m
- Visitors
- 218,000
- Crowds
- Quiet
Best months for weather and crowds instead: August (very busy) and September (busy).
Weather 1991–2020 averages at W Glacier, MT, 13.3 miles from the park's center, 3,148 ft. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in May
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Lake Roosevelt National Recreation Area | 65° / 39° | Moderate | Mild, wet |
| Yellowstone National Park | 51° / 26° | Moderate | Cool |
| Ross Lake National Recreation Area | 65° / 45° | Moderate | Mild |
| John D. Rockefeller, Jr., Memorial Parkway | 56° / 28° | Moderate | Mild |
| North Cascades National Park | 67° / 46° | Quiet | Mild |
Closures, reservations and alerts: Glacier National Park on nps.gov
All twelve months at Glacier · National parks to visit in May