Idaho December Weather

Idaho weather averages in the month of December from 1991–2020 based on data made available by the NOAA.
Statewide December Averages
High temperature 32.4 °F
Low temperature 16.9 °F
Precipitation 3.0 inches
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Idaho December Temperature by Year
Idaho Cities
December weather averages for various places in Idaho, from 1991–2020.
City Average (°F) Record (°F) Monthly (inches)
High Low High Low Precipitation Snow
Boise 38.8 25.2 65 -25 1.5 5.5
Bonners Ferry 33.6 23.7 59 -33 3.2 17.3
Burley 37.3 21.0 70 -28 1.1 n/a
Coeur d'Alene 36.4 26.4 60 -26 3.7 n/a
Emmett 38.9 23.7 74 -27 2.1 2.9
Hamer 29.4 8.2 60 -40 0.8 7.7
Idaho Falls 30.6 13.5 58 -31 0.7 n/a
Jerome 37.4 20.4 67 -24 1.5 n/a
Kellogg 35.8 23.8 61 -36 3.6 14.5
Ketchum 31.0 8.8 60 -37 2.8 29.6
Lewiston 40.5 29.2 66 -22 1.1 3.9
McCall 30.9 13.4 58 -31 3.3 32.6
Moscow 36.5 24.3 61 -42 3.5 15.3
Pierce 33.5 18.6 59 -33 5.6 29.6
Pocatello 34.3 17.3 64 -29 1.1 9.8
Preston 33.1 16.3 65 -31 1.6 14.2
Rexburg 30.3 13.7 61 -31 1.1 n/a
Salmon 29.5 14.2 59 -31 0.7 6.9
Sandpoint 34.0 22.8 58 -37 4.5 18.7
St. Maries 35.3 24.8 64 -29 4.3 16.7
Twin Falls 37.7 21.1 68 -23 1.3 n/a