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Summer
The months of July through mid-September are generally mild with little precipitation. Due to the elevation of the park (6,500 ft. at Park Headquarters and 7,100 ft. at Rim Village), weather conditions may change quickly and a warm jacket and wool sweater are always recommended items to carry.
Winter
From October through June, weather conditions dictate preparing for extreme winter conditions. Blizzards, high winds, extreme cold, and low visibility dominate the weather patterns, Visitors should come with cold weather gear.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Avg High - °F | 33.6 | 35.1 | 37.2 | 42.9 | 50.2 | 58.2 | 68.9 | 69.1 | 62.2 | 52.1 | 40.1 | 34.7 | 48.8 |
| Avg Low - °F | 17.5 | 18.6 | 19.0 | 22.6 | 28.4 | 34.2 | 41.1 | 40.8 | 36.5 | 30.7 | 23.6 | 19.3 | 27.7 |
| Avg Precip (in) | 10.71 | 8.71 | 7.95 | 4.88 | 3.37 | 2.43 | 0.81 | 0.94 | 2.08 | 5.23 | 9.59 | 11.37 | 68.08 |
| Avg Snowfall (in) | 107.2 | 89.4 | 87.2 | 44.9 | 20.9 | 4.1 | 0.2 | 0.2 | 2.9 | 22.6 | 63.5 | 92.8 | 536.0 |
| Avg Snow Depth (in) | 81.0 | 105.0 | 119.0 | 113.0 | 78.0 | 24.0 | 1.0 | 0.0 | 0.0 | 3.0 | 17.0 | 48.0 | 49.0 |
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This site is in no way associated with the United States Government, the Department of the Interior or the National Park Service
