Idaho December Weather

Idaho weather averages and all-time records in the month of December from 1991–2020 based on data made available by the NOAA.

State:

Month:

Statewide December Averages
High temperature	32.4 °F
Low temperature	16.9 °F
Precipitation	3.0 inches

Idaho Cities

December weather averages for various places in Idaho, from 1991–2020.

City	Average (°F)		Record (°F)		Monthly (inches)
City	High	Low	High	Low	Precipitation	Snow
Boise	38.8	25.1	69	-30	1.5	5.5
Bonners Ferry	33.6	23.7	59	-33	3.2	16.9
Burley	37.3	21.0	70	-28	1.1	n/a
Coeur d'Alene	36.4	26.4	60	-26	3.8	n/a
Emmett	38.9	23.7	74	-27	2.1	2.9
Hamer	29.5	8.2	60	-40	0.8	7.4
Idaho Falls	30.5	13.4	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	15.0
Ketchum	31.0	8.8	60	-37	2.7	29.7
Lewiston	40.5	29.2	66	-22	1.1	3.8
McCall	30.9	13.4	58	-31	3.3	32.8
Moscow	36.5	24.3	61	-42	3.5	15.3
Pierce	33.5	18.6	59	-33	5.6	29.7
Pocatello	34.3	17.2	64	-29	1.1	9.8
Preston	33.1	16.3	65	-31	1.6	14.1
Rexburg	30.3	13.7	61	-31	1.1	n/a
Salmon	29.5	14.2	59	-31	0.7	6.8
Sandpoint	34.0	22.9	58	-37	4.8	19.0
St. Maries	35.3	24.8	64	-29	4.3	16.7
Twin Falls	37.6	21.0	68	-23	1.3	n/a