Winter comes early in the Alaskan interior. Snow can fall in any month of the year, though for backcountry purposes, "winter camping" is any trip between October 1 and April 15.
Did You Know?
Warmer temperatures have led to dramatic thawing of permafrost. Thaw releases carbon, as once-frozen materials decompose, but allows increased plant growth. Researchers in Denali are studying whether thawing permafrost will increase or decrease world-wide carbon emissions.