January weather in Plains, MT
The average temperature in Plains in January is 28.3°F (21.5°F–35.0°F). Average precipitation: inches.
January is a winter month in Plains, and is cooler than the annual average of 46.2°F. Daily temperatures swing about 13.5°F between overnight low and afternoon high. Daylight averages about 8h 39m. For travel, January is cold.
Avg High
35.0°F
Avg Low
21.5°F
Precipitation
in
Daylight
8h 39m
January records in Plains
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 52.0°F (1998) | -29.9°F (1979) | 0.90 in (1990) |
| January 2 | 46.9°F (2007) | -24.0°F (1978) | 0.75 in (1998) |
| January 3 | 50.0°F (2007) | -18.0°F (1974) | 0.60 in (2007) |
| January 4 | 43.0°F (1963) | -22.0°F (1974) | 1.01 in (1966) |
| January 5 | 48.0°F (2001) | -24.0°F (1974) | 0.43 in (2008) |
| January 6 | 46.9°F (2001) | -26.0°F (1979) | 0.89 in (1966) |
| January 7 | 46.0°F (1961) | -26.0°F (1979) | 1.20 in (1969) |
| January 8 | 44.1°F (1961) | -25.1°F (1979) | 0.97 in (2009) |
| January 9 | 48.0°F (2007) | -18.0°F (1973) | 0.60 in (1990) |
| January 10 | 48.9°F (2007) | -22.0°F (1962) | 0.60 in (1990) |
| January 11 | 48.0°F (1983) | -27.0°F (1963) | 0.62 in (1969) |
| January 12 | 44.1°F (1961) | -27.0°F (1963) | 0.41 in (2011) |
| January 13 | 48.0°F (1983) | -20.0°F (1993) | 0.82 in (1969) |
| January 14 | 54.0°F (1994) | -15.0°F (1997) | 0.35 in (2000) |
| January 15 | 48.0°F (2014) | -18.9°F (2005) | 1.02 in (1974) |
| January 16 | 54.0°F (1961) | -11.9°F (1997) | 0.76 in (1996) |
| January 17 | 48.9°F (1994) | -9.9°F (1984) | 1.45 in (1982) |
| January 18 | 55.0°F (1994) | -11.9°F (1984) | 0.47 in (1974) |
| January 19 | 54.0°F (1994) | -23.1°F (1963) | 0.78 in (1967) |
| January 20 | 46.9°F (1994) | -13.0°F (1963) | 0.40 in (1964) |
| January 21 | 46.9°F (1968) | -32.1°F (1962) | 0.90 in (1990) |
| January 22 | 43.0°F (1968) | -22.0°F (1962) | 0.27 in (1978) |
| January 23 | 46.0°F (1994) | -18.9°F (1963) | 0.43 in (1999) |
| January 24 | 51.1°F (1994) | -13.0°F (1969) | 0.82 in (1965) |
| January 25 | 51.1°F (1994) | -15.0°F (1969) | 1.23 in (1964) |
| January 26 | 46.0°F (1962) | -22.0°F (1963) | 0.92 in (1969) |
| January 27 | 51.1°F (1983) | -20.0°F (1972) | 0.64 in (1965) |
| January 28 | 50.0°F (1962) | -26.0°F (1972) | 0.19 in (1996) |
| January 29 | 54.0°F (1962) | -11.0°F (1979) | 0.49 in (1961) |
| January 30 | 55.0°F (1971) | -24.0°F (1963) | 0.50 in (1961) |
| January 31 | 61.0°F (1962) | -18.0°F (1979) | 0.43 in (2003) |