Severe winter weather is the defining safety challenge at Denali, with 85 blizzards and 77 high-wind events recorded across the state hazard zone — conditions that can descend rapidly even during summer shoulder months. Those storms contributed to 2 deaths and 4 injuries in the recorded period, and they can strand campers for days when road access closes along the single park corridor.
If you're camping here, pack a four-season tent rated to at least 40 mph wind loads and stake it with snow anchors rather than standard pegs. Keep a minimum three-day supply of food and fuel inside your vehicle or hard-sided storage in case a blizzard pins you at your site. Before entering the park, download the NPS Denali app's weather alerts and check road status at the Visitor Center in Canton — conditions change faster than most forecasts can track.
Top recorded hazards in Alaska
State dataFrom NOAA Storm Events (2024). Counts of recorded incidents — not all occurred at this park.
- Blizzard 85
- High Wind 77
- Winter Storm 43
- Heavy Snow 31
- Flood 28
- Winter Weather 19
Gear keyed to this park's risks
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About Denali National Park & Preserve
Denali is six million acres of wild land, bisected by one ribbon of road. Travelers along it see the relatively low-elevation taiga forest give way to high alpine tundra and snowy mountains, culminating in North America's tallest peak, 20,310' Mount McKinley. Wild animals large and small roam un-fenced lands, living as they have for ages. Solitude, tranquility and wilderness await.
Weather
Summer is typically cool and wet, with highs typically in the upper 50s to low 60s, and lows in the 40s. On occasion, summer highs reach the low 80s, though this is rare. Snow can fall any month of the year, so be prepared for chilly weather even in summer. Fall colors emerge on the alpine tundra in August and in the low valleys in early September. Winter generally starts in mid-September, with temps often getting down to -40 by January. Spring is a short season in April / May, with highs above freezing.