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Castle Rock January Weather

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

Typical Castle Rock January Weather 1991–2020
Average daily high	45.6 °F
Average daily low	16.9 °F
Average monthly precipitation	0.6 inches
Average monthly snow	7.2 inches
Daily chance of precipitation	13.3%
Daily chance of snow	12.1%

Castle Rock January Weather Records 1893–2024
Highest temperature	73 °F	January 3, 1997
Lowest temperature	-37 °F	January 6, 1913
Highest daily low	44 °F	January 20, 1986
Lowest daily high	-6 °F	January 11, 1963
Hottest average high temperature	54.5 °F	1986
Coldest average high temperature	35.7 °F	1979
Most daily precipitation	1.0 inches	January 24, 1921
Most monthly precipitation	1.7 inches	1915
Most daily snow	16.0 inches	January 19, 1988
Most monthly snow	21.1 inches	2007

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	45.2	16.5	68	-22
January 2	45.3	16.4	67	-31
January 3	45.2	16.5	73	-23
January 4	45.3	16.5	65	-16
January 5	45.2	16.6	70	-25
January 6	45.5	16.7	67	-37
January 7	45.8	16.9	67	-32
January 8	46.0	17.0	72	-16
January 9	46.0	17.1	63	-15
January 10	46.0	17.1	70	-14
January 11	46.0	17.2	65	-23
January 12	46.1	17.2	67	-35
January 13	46.1	17.3	69	-22
January 14	46.0	17.2	70	-11
January 15	45.9	17.2	65	-18
January 16	45.9	17.2	65	-16
January 17	46.0	17.3	68	-16
January 18	46.0	17.3	68	-22
January 19	46.0	17.3	65	-19
January 20	46.0	17.3	68	-15
January 21	46.0	17.3	69	-16
January 22	45.9	17.3	68	-19
January 23	45.9	17.4	66	-21
January 24	45.9	17.3	69	-16
January 25	45.9	17.3	65	-21
January 26	45.8	17.3	67	-23
January 27	45.9	17.4	67	-17
January 28	46.0	17.5	71	-13
January 29	46.0	17.5	66	-15
January 30	46.0	17.6	67	-17
January 31	46.1	17.7	66	-17

Weather Station Details

Years	Station	Coordinates
1893–2024	Castle Rock	location