Helena Weather in January
Average highs run from 31°F on January 1 to 34°F on January 31, and lows from 12°F to 15°F. Normal precipitation for the month is 0.39 in over about 7 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
- 32°F
- Average low
- 14°F
- Precipitation
- 0.39 in
- Snowfall
- 6.6 in
- Record high
- 63°FJan 25, 2015
- Record low
- -42°FJan 25, 1957
- Chance of a freeze
- 100%
- Daylight
- 8 h 40 min to 9 h 38 min
- Cloud cover
- 69%
- Humidity
- 92%
- Dew point
- 16°F
- Wind
- 7.2 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 | 31°F | 12°F | 60°F 1939 | -33°F 1942 | 22% | 19% |
| Jan 2 | 31°F | 12°F | 54°F 1939 | -26°F 1950 | 22% | 19% |
| Jan 3 | 31°F | 12°F | 55°F 2026 | -30°F 1950 | 22% | 19% |
| Jan 4 | 31°F | 12°F | 53°F 1956 | -33°F 1942 | 22% | 19% |
| Jan 5 | 31°F | 12°F | 53°F 2012 | -37°F 1942 | 22% | 19% |
| Jan 6 | 31°F | 12°F | 53°F 1948 | -32°F 2004 | 22% | 19% |
| Jan 7 | 31°F | 13°F | 61°F 2002 | -29°F 1942 | 22% | 19% |
| Jan 8 | 32°F | 13°F | 55°F 1966 | -24°F 1974 | 22% | 18% |
| Jan 9 | 32°F | 13°F | 60°F 1953 | -25°F 1962 | 22% | 18% |
| Jan 10 | 32°F | 13°F | 56°F 1990 | -26°F 1962 | 21% | 18% |
| Jan 11 | 32°F | 13°F | 62°F 1953 | -28°F 1998 | 21% | 18% |
| Jan 12 | 32°F | 13°F | 58°F 2026 | -33°F 1997 | 21% | 18% |
| Jan 13 | 32°F | 13°F | 56°F 2026 | -36°F 2024 | 21% | 18% |
| Jan 14 | 32°F | 13°F | 58°F 2026 | -28°F 2024 | 21% | 18% |
| Jan 15 | 32°F | 13°F | 58°F 1974 | -28°F 1950 | 21% | 18% |
| Jan 16 | 32°F | 13°F | 56°F 1974 | -26°F 1957 | 21% | 18% |
| Jan 17 | 33°F | 14°F | 53°F 2022 | -30°F 1943 | 21% | 18% |
| Jan 18 | 33°F | 14°F | 51°F 1977 | -33°F 1943 | 21% | 18% |
| Jan 19 | 33°F | 14°F | 55°F 2005 | -32°F 1949 | 21% | 18% |
| Jan 20 | 33°F | 14°F | 57°F 1950 | -36°F 1954 | 21% | 18% |
| Jan 21 | 33°F | 14°F | 52°F 1950 | -32°F 1962 | 21% | 18% |
| Jan 22 | 33°F | 14°F | 54°F 1954 | -29°F 1962 | 21% | 18% |
| Jan 23 | 33°F | 14°F | 52°F 1953 | -35°F 1969 | 21% | 18% |
| Jan 24 | 33°F | 14°F | 58°F 1953 | -35°F 1969 | 21% | 18% |
| Jan 25 | 33°F | 15°F | 63°F 2015 | -42°F 1957 | 21% | 18% |
| Jan 26 | 34°F | 15°F | 57°F 2003 | -41°F 1957 | 21% | 18% |
| Jan 27 | 34°F | 15°F | 56°F 1983 | -37°F 1957 | 21% | 18% |
| Jan 28 | 34°F | 15°F | 54°F 1984 | -30°F 1972 | 21% | 18% |
| Jan 29 | 34°F | 15°F | 56°F 1962 | -31°F 1950 | 21% | 18% |
| Jan 30 | 34°F | 15°F | 58°F 1989 | -37°F 1996 | 21% | 18% |
| Jan 31 | 34°F | 15°F | 62°F 1992 | -31°F 1996 | 21% | 18% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- January 1
- sunrise 8:12 AM, sunset 4:52 PM
- January 31
- sunrise 7:53 AM, sunset 5:31 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024144 (Helena Rgnl AP), public domain. Records: NOAA GHCN-Daily, station USW00024144, 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.