January weather in Helena, MT
The average temperature in Helena in January is 23.0°F (13.5°F–32.4°F). Average precipitation: 0.39 inches. Average snowfall is 6.6 inches.
January is a winter month in Helena, and is cooler than the annual average of 45.5°F. Daily temperatures swing about 18.9°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 8h 46m. For travel, January is cold.
Avg High
32.4°F
Avg Low
13.5°F
Precipitation
0.39 in
Snow
6.6 in
January records in Helena
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 60.1°F (1939) | -33.0°F (1942) | 0.17 in (1974) |
| January 2 | 54.0°F (1939) | -26.0°F (1950) | 0.21 in (1942) |
| January 3 | 55.0°F (2026) | -29.9°F (1950) | 0.32 in (2025) |
| January 4 | 53.1°F (1956) | -33.0°F (1942) | 0.10 in (1966) |
| January 5 | 53.1°F (2012) | -36.9°F (1942) | 0.40 in (1980) |
| January 6 | 53.1°F (1948) | -32.1°F (2004) | 0.33 in (1989) |
| January 7 | 61.0°F (2002) | -29.0°F (1942) | 0.16 in (1962) |
| January 8 | 55.0°F (1966) | -24.0°F (1974) | 0.17 in (1990) |
| January 9 | 60.1°F (1953) | -25.1°F (1962) | 0.57 in (1971) |
| January 10 | 55.9°F (1990) | -26.0°F (1962) | 0.31 in (2013) |
| January 11 | 62.1°F (1953) | -27.9°F (1998) | 0.21 in (2024) |
| January 12 | 57.9°F (2026) | -33.0°F (1997) | 0.13 in (2024) |
| January 13 | 55.9°F (2026) | -35.9°F (2024) | 0.20 in (2014) |
| January 14 | 57.9°F (2026) | -27.8°F (2024) | 0.20 in (1949) |
| January 15 | 57.9°F (1974) | -27.9°F (1950) | 0.34 in (1954) |
| January 16 | 55.9°F (1974) | -26.0°F (1957) | 0.24 in (1954) |
| January 17 | 53.1°F (2022) | -29.9°F (1943) | 0.33 in (2024) |
| January 18 | 51.1°F (1977) | -33.0°F (1943) | 0.71 in (2012) |
| January 19 | 55.0°F (2005) | -32.1°F (1949) | 0.40 in (2012) |
| January 20 | 57.0°F (1950) | -36.0°F (1954) | 0.40 in (1969) |
| January 21 | 52.0°F (1950) | -32.1°F (1962) | 0.52 in (1969) |
| January 22 | 54.0°F (1954) | -29.0°F (1962) | 0.37 in (1989) |
| January 23 | 52.0°F (1953) | -35.0°F (1969) | 0.19 in (1982) |
| January 24 | 57.9°F (1953) | -35.0°F (1969) | 0.11 in (1972) |
| January 25 | 63.0°F (2015) | -42.0°F (1957) | 0.40 in (1975) |
| January 26 | 57.0°F (2003) | -41.1°F (1957) | 0.40 in (1975) |
| January 27 | 55.9°F (1983) | -36.9°F (1957) | 0.21 in (1949) |
| January 28 | 54.0°F (1984) | -29.9°F (1972) | 0.19 in (1959) |
| January 29 | 55.9°F (1962) | -31.0°F (1950) | 0.09 in (1978) |
| January 30 | 57.9°F (1989) | -36.9°F (1996) | 0.26 in (1974) |
| January 31 | 62.1°F (1992) | -31.0°F (1996) | 0.16 in (1989) |