Custer County Weather in January
Average highs run from 39°F on January 1 to 40°F on January 31, and lows from 15°F to 15°F. Normal precipitation for the month is 0.45 in over about 5 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
- 40°F
- Average low
- 15°F
- Precipitation
- 0.45 in
- Snowfall
- 6.3 in
- Record high
- 65°FJan 27, 2015
- Record low
- -30°FJan 14, 2024
- Chance of a freeze
- 100%
- Daylight
- 9 h 01 min to 9 h 53 min
- Cloud cover
- 63%
- Humidity
- 72%
- Dew point
- 17°F
- Wind
- 10.5 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 | 39°F | 15°F | 56°F 2026 | -12°F 2018 | 13% | 11% |
| Jan 2 | 39°F | 15°F | 49°F 2026 | -7°F 2002 | 13% | 12% |
| Jan 3 | 39°F | 15°F | 56°F 2003 | -5°F 2017 | 13% | 12% |
| Jan 4 | 39°F | 15°F | 53°F 2016 | -13°F 2017 | 13% | 12% |
| Jan 5 | 39°F | 15°F | 58°F 2012 | -15°F 2004 | 13% | 12% |
| Jan 6 | 39°F | 15°F | 53°F 2006 | -19°F 2010 | 14% | 12% |
| Jan 7 | 39°F | 15°F | 64°F 2003 | -23°F 2010 | 14% | 12% |
| Jan 8 | 40°F | 15°F | 60°F 2002 | -12°F 2010 | 14% | 12% |
| Jan 9 | 40°F | 15°F | 52°F 2001 | -12°F 2015 | 14% | 12% |
| Jan 10 | 40°F | 15°F | 51°F 2004 | -11°F 2011 | 14% | 12% |
| Jan 11 | 40°F | 15°F | 50°F 2026 | -15°F 2011 | 14% | 13% |
| Jan 12 | 40°F | 15°F | 53°F 2026 | -16°F 2024 | 14% | 13% |
| Jan 13 | 40°F | 15°F | 53°F 2023 | -26°F 2024 | 15% | 13% |
| Jan 14 | 40°F | 15°F | 50°F 2006 | -30°F 2024 | 15% | 13% |
| Jan 15 | 40°F | 15°F | 53°F 2000 | -20°F 2024 | 15% | 13% |
| Jan 16 | 40°F | 15°F | 54°F 2010 | -9°F 2005 | 15% | 13% |
| Jan 17 | 40°F | 15°F | 50°F 2017 | -7°F 2012 | 15% | 13% |
| Jan 18 | 40°F | 15°F | 61°F 2017 | -12°F 2024 | 16% | 14% |
| Jan 19 | 40°F | 15°F | 54°F 2005 | -14°F 2025 | 16% | 14% |
| Jan 20 | 40°F | 15°F | 61°F 2009 | -16°F 2025 | 16% | 14% |
| Jan 21 | 40°F | 15°F | 57°F 2009 | -9°F 2008 | 16% | 14% |
| Jan 22 | 40°F | 15°F | 52°F 2009 | -7°F 2003 | 16% | 14% |
| Jan 23 | 40°F | 15°F | 56°F 2005 | -12°F 2026 | 16% | 15% |
| Jan 24 | 40°F | 15°F | 62°F 2005 | -14°F 2026 | 17% | 15% |
| Jan 25 | 40°F | 15°F | 54°F 2006 | -12°F 2026 | 17% | 15% |
| Jan 26 | 40°F | 15°F | 61°F 2015 | -12°F 2009 | 17% | 15% |
| Jan 27 | 40°F | 15°F | 65°F 2015 | 0°F 2004 | 17% | 15% |
| Jan 28 | 40°F | 15°F | 54°F 2024 | -6°F 2023 | 17% | 16% |
| Jan 29 | 40°F | 15°F | 53°F 2024 | -19°F 2023 | 18% | 16% |
| Jan 30 | 40°F | 15°F | 61°F 2024 | -24°F 2023 | 18% | 16% |
| Jan 31 | 40°F | 15°F | 58°F 2024 | -20°F 2011 | 18% | 16% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- January 1
- sunrise 7:27 AM, sunset 4:28 PM
- January 31
- sunrise 7:11 AM, sunset 5:04 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00399347 (Wind Cave), public domain. Records: NOAA GHCN-Daily, station USW00094032, 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.