Custer County Weather in January
Average highs run from 32°F on January 1 to 34°F on January 31, and lows from 6°F to 8°F. Normal precipitation for the month is 0.44 in over about 6 wet days.
January day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 33°F
- Average low
- 6°F
- Precipitation
- 0.44 in
- Snowfall
- 5.6 in
- Record high
- 72°FJan 31, 1992
- Record low
- -37°FJan 25, 1957
- Chance of a freeze
- 100%
- Daylight
- 8 h 42 min to 9 h 40 min
- Cloud cover
- 68%
- Humidity
- 77%
- Dew point
- 16°F
- Wind
- 11.2 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Jan 1 | 32°F | 6°F | 57°F 1964 | -30°F 2018 | 21% | 17% |
| Jan 2 | 32°F | 6°F | 50°F 1962 | -24°F 2018 | 21% | 17% |
| Jan 3 | 32°F | 6°F | 57°F 2003 | -23°F 1950 | 21% | 17% |
| Jan 4 | 32°F | 6°F | 58°F 2020 | -27°F 1979 | 21% | 17% |
| Jan 5 | 32°F | 6°F | 63°F 2012 | -27°F 1942 | 21% | 17% |
| Jan 6 | 32°F | 6°F | 54°F 2006 | -25°F 2014 | 21% | 17% |
| Jan 7 | 32°F | 6°F | 60°F 2003 | -25°F 2010 | 21% | 17% |
| Jan 8 | 32°F | 6°F | 63°F 2002 | -26°F 1976 | 21% | 17% |
| Jan 9 | 32°F | 6°F | 60°F 1953 | -21°F 1973 | 21% | 17% |
| Jan 10 | 32°F | 6°F | 54°F 1992 | -29°F 1982 | 21% | 17% |
| Jan 11 | 32°F | 6°F | 55°F 1987 | -27°F 1974 | 21% | 17% |
| Jan 12 | 32°F | 6°F | 62°F 1953 | -34°F 1998 | 21% | 17% |
| Jan 13 | 32°F | 6°F | 56°F 1944 | -33°F 2024 | 21% | 17% |
| Jan 14 | 32°F | 6°F | 55°F 1944 | -34°F 2005 | 21% | 17% |
| Jan 15 | 32°F | 6°F | 50°F 1974 | -30°F 2005 | 21% | 17% |
| Jan 16 | 32°F | 6°F | 56°F 1961 | -27°F 1937 | 21% | 17% |
| Jan 17 | 33°F | 6°F | 56°F 1944 | -28°F 1943 | 21% | 17% |
| Jan 18 | 33°F | 6°F | 51°F 1981 | -32°F 1943 | 21% | 16% |
| Jan 19 | 33°F | 6°F | 60°F 1944 | -30°F 1954 | 20% | 16% |
| Jan 20 | 33°F | 7°F | 56°F 1992 | -36°F 1954 | 20% | 16% |
| Jan 21 | 33°F | 7°F | 53°F 1981 | -30°F 1949 | 20% | 16% |
| Jan 22 | 33°F | 7°F | 59°F 1981 | -30°F 1982 | 20% | 16% |
| Jan 23 | 33°F | 7°F | 59°F 2005 | -32°F 1982 | 20% | 16% |
| Jan 24 | 33°F | 7°F | 60°F 2005 | -32°F 1969 | 20% | 16% |
| Jan 25 | 33°F | 7°F | 58°F 2006 | -37°F 1957 | 20% | 16% |
| Jan 26 | 33°F | 7°F | 58°F 2015 | -33°F 1957 | 20% | 16% |
| Jan 27 | 33°F | 7°F | 61°F 2015 | -27°F 1972 | 20% | 15% |
| Jan 28 | 33°F | 7°F | 57°F 1992 | -25°F 1969 | 20% | 15% |
| Jan 29 | 33°F | 8°F | 58°F 1992 | -27°F 1996 | 20% | 15% |
| Jan 30 | 34°F | 8°F | 57°F 1992 | -37°F 1996 | 20% | 15% |
| Jan 31 | 34°F | 8°F | 72°F 1992 | -26°F 1956 | 20% | 15% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- January 1
- sunrise 7:45 AM, sunset 4:27 PM
- January 31
- sunrise 7:26 AM, sunset 5:06 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00245754 (Mizpah 4 Nnw), public domain. Records: NOAA GHCN-Daily, station USW00024037, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.