< Previous Month Next Month >

Alamosa December Weather

Averages and records for weather in Alamosa, Colorado in the month of December.

Typical Alamosa December Weather 1991–2020
Average daily high	35.4 °F
Average daily low	0.3 °F
Average monthly precipitation	0.3 inches
Average monthly snow	4.6 inches
Daily chance of precipitation	13.9%
Daily chance of snow	12.9%

Alamosa December Weather Records 1906–2024
Highest temperature	63 °F	December 30, 2017
Lowest temperature	-42 °F	December 8, 1978
Highest daily low	40 °F	December 6, 1966
Lowest daily high	0 °F	December 7, 1964
Hottest average high temperature	48.6 °F	1980
Coldest average high temperature	20.8 °F	1991
Most daily precipitation	1.0 inches	December 9, 1943
Most monthly precipitation	1.5 inches	1964
Most daily snow	15.8 inches	December 13, 1967
Most monthly snow	27.7 inches	1967

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
December 1	41.0	5.3	61	-17
December 2	40.4	4.8	61	-14
December 3	39.9	4.4	62	-20
December 4	39.3	3.9	59	-17
December 5	38.8	3.6	59	-26
December 6	38.3	3.2	59	-31
December 7	37.9	2.8	59	-35
December 8	37.5	2.5	61	-42
December 9	37.1	2.2	54	-39
December 10	36.7	1.8	56	-24
December 11	36.3	1.5	55	-28
December 12	36.1	1.2	56	-41
December 13	35.9	0.8	56	-38
December 14	35.7	0.6	55	-42
December 15	35.5	0.5	60	-32
December 16	35.3	0.2	55	-27
December 17	35.0	0.0	56	-24
December 18	34.8	-0.2	53	-25
December 19	34.5	-0.5	56	-29
December 20	34.3	-0.8	56	-27
December 21	34.2	-1.0	52	-28
December 22	34.0	-1.1	56	-30
December 23	33.9	-1.3	58	-29
December 24	33.8	-1.3	58	-33
December 25	33.8	-1.4	60	-27
December 26	33.8	-1.5	58	-28
December 27	33.7	-1.6	58	-23
December 28	33.6	-1.7	51	-29
December 29	33.6	-1.7	53	-33
December 30	33.7	-1.7	63	-28
December 31	33.7	-1.7	55	-30

Weather Station Details

Years	Station	Coordinates
1948–2024	Alamosa San Luis Airport	location
1906–1947	Alamosa	location