< Previous Month Next Month >

Boulder January Weather

Averages and records for weather in Boulder, Colorado in the month of January.

Typical Boulder January Weather 1991–2020
Average daily high	47.0 °F
Average daily low	22.1 °F
Average monthly precipitation	0.8 inches
Average monthly snow	11.5 inches
Daily chance of precipitation	18.7%
Daily chance of snow	18.0%

Boulder January Weather Records 1893–2024
Highest temperature	73 °F	January 20, 2005
Lowest temperature	-33 °F	January 17, 1930
Highest daily low	53 °F	January 31, 1911
Lowest daily high	-4 °F	January 7, 1937
Hottest average high temperature	57.1 °F	1986
Coldest average high temperature	29.3 °F	1937
Most daily precipitation	1.0 inches	January 6, 1998
Most monthly precipitation	2.5 inches	1948
Most daily snow	15.5 inches	January 8, 1962
Most monthly snow	35.0 inches	1948

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

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
January 1	45.6	20.9	70	-14
January 2	45.7	21.0	70	-14
January 3	45.7	21.0	68	-10
January 4	45.8	21.0	67	-14
January 5	46.0	21.1	71	-13
January 6	46.2	21.3	70	-20
January 7	46.4	21.5	69	-22
January 8	46.5	21.7	70	-16
January 9	46.6	21.7	72	-11
January 10	46.6	21.8	66	-13
January 11	46.7	21.8	69	-18
January 12	46.8	21.8	70	-22
January 13	46.9	21.9	69	-12
January 14	47.0	21.9	67	-9
January 15	47.0	22.1	69	-11
January 16	47.2	22.1	71	-14
January 17	47.1	22.2	67	-33
January 18	47.1	22.2	65	-19
January 19	47.1	22.2	69	-17
January 20	47.1	22.3	73	-15
January 21	47.1	22.3	70	-18
January 22	47.1	22.3	67	-11
January 23	47.0	22.3	71	-10
January 24	47.0	22.2	70	-8
January 25	47.1	22.3	70	-8
January 26	47.1	22.2	72	-20
January 27	47.2	22.3	72	-7
January 28	47.2	22.3	68	-9
January 29	47.2	22.2	70	-12
January 30	47.3	22.3	71	-7
January 31	47.5	22.4	70	-9

Weather Station Details

Years	Station	Coordinates
1893–2024	Boulder	location