Wyoming December Weather

Wyoming 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	32.2 °F
Low temperature	11.3 °F
Precipitation	1.0 inches

Wyoming Cities

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

City	Average (°F)		Record (°F)		Monthly (inches)
City	High	Low	High	Low	Precipitation	Snow
Casper	35.1	15.1	67	-42	0.6	11.0
Cheyenne	39.3	17.8	70	-28	0.5	9.0
Cody	38.1	17.9	67	-35	0.3	6.6
Deaver	33.3	6.8	66	-42	0.1	3.0
Gillette	35.7	15.5	72	-37	0.6	8.1
Jackson Hole	28.5	7.3	66	-52	1.5	18.7
Kemmerer	29.9	3.6	64	-39	0.6	9.3
Lander	32.8	10.8	65	-37	0.6	9.5
Laramie	32.8	10.1	62	-34	0.3	n/a
Lovell	33.4	10.2	66	-43	0.2	2.2
Newcastle	35.7	14.4	68	-35	0.5	6.6
Pinedale	27.8	2.9	56	-49	0.7	13.2
Rawlins	31.9	13.5	60	-35	0.4	n/a
Riverton	30.8	4.9	65	-46	0.3	5.3
Rock Springs	29.8	12.9	59	-30	0.3	n/a
Sheridan	36.7	12.3	78	-37	0.5	n/a
Sundance	34.3	14.5	65	-40	0.6	10.8
Thermopolis	37.5	12.3	78	-38	0.4	5.6
Wheatland	42.0	18.4	76	-39	0.4	6.0
Worland	32.5	7.2	68	-44	0.2	1.1
Yellowstone National Park	26.7	0.9	58	-47	2.7	43.7