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Coldest in January (Avg low temp in degrees F)
Fargo
-2
Vail
2
Rochester
4
Lake Placid
5
Middleton
6
Green Bay
7
Aspen
7
Fond du Lac
9
Burlington
9
Concord
10
Park City
10
Great Falls
11
Durango
12
Casper
12
Iowa City
13