Much of Interior Alaska dipped below freezing for the first time this season Thursday. The areas shaded in blue on the graphic above indicate the locations at or below freezing.

Fairbanks International Airport dropped to 30 degrees at about 6:30 a.m. Thursday and stayed there for about an hour. This is the first frost Fairbanks as seen since May 5, ending a 125 day frost-free period.

The National Weather Service in Fairbanks says this is the 12th longest growing season since records began in Fairbanks more than 100 years ago.

Temperatures will be close to freezing again in Fairbanks and surrounding communities both Thursday and Friday nights.

While Fairbanks is likely to stay dry through the weekend, much of the Brooks Range will see significant snowfall beginning Friday night. Two-to-five inches of new snow is expected in the western Brooks Range and 3 to 8 inches in the higher elevations of the eastern Brooks Range.

The National Weather Service warns the Dalton Highway, in and near the Brooks Range, may become difficult and hazardous to drive.

KTVA 11's Melissa Frey can be reached via email or on Facebook and Twitter.