Average Snowfall for Idaho in December





The tables below give monthly averages for snowfall during December at cities, communities and other locations around Idaho. The numbers are for the total amount of new snow and how many days it snows at least 0.1 inches (0.25 centimetres) this month.

The snowfall totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

You can jump to a separate table for each region of the state: Eastern, Central, Southwestern and Northern Idaho.

Eastern Idaho

Average total snowfall in December
Days Place Inches Centi­metres
12.3 Pocatello 16.4 41.7
7.2 Preston 14.1 35.8

Central Idaho

December snowfall averages
Days Place Inches Centi­metres
8.8 Craters of the Moon Monument 22.9 58.2
9.9 Ketchum 32.0 81.3
3.4 Lake Walcott, Minidoka Dam 4.6 11.7
7.1 Middle Fork Lodge 12.5 31.8
4.1 Salmon 6.4 16.3
8.9 St. Maries 18.3 46.5
5.0 Twin Falls 6.0 15.2

Southwestern Idaho

Average snow for December
Days Place Inches Centi­metres
5.5 Boise 5.6 14.2
12.2 McCall 33.5 85.1

Northern Idaho

Average total snowfall in December
Days Place Inches Centi­metres
8.4 Bonners Ferry 17.3 43.9
14.2 Elk City 26.4 67.1
9.5 Kellogg 13.8 35.1
3.6 Lewiston 4.1 10.4
7.8 Moscow 15.5 39.4
1.2 Riggins 2.0 5.1
9.3 Sandpoint 19.3 49.0
9.5 Wallace 22.7 57.7
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Idaho Snowfall
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