Climate
Summers are warm with average high temperatures in the 70s and 80s May through September. Winters are cold with average lows in the single digits December through February. Wind is considerable year-round. Conditions can change quickly.
The park receives an average of 15 inches of precipitation per year which includes an average of 30 inches of snow during winter months. Travelers should be aware of the potential for violent thunderstorms in the summer and the possibility of blizzard conditions in the winter.
Did You Know?
Cannonball concretions can be found along the North Unit Scenic Drive. They were formed by the selective precipitation of mineral-rich groundwater and are nearly spherical because the sandstone in which sand grains were cemented together was of uniform permeability.
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