January weather in Irwin, ID
The average temperature in Irwin in January is 20.7°F (11.0°F–30.4°F). Average precipitation: 1.85 inches.
January is a winter month in Irwin, and is cooler than the annual average of 42.6°F. Daily temperatures swing about 19.4°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 7m. For travel, January is cold.
Avg High
30.4°F
Avg Low
11.0°F
Precipitation
1.85 in
Daylight
9h 7m
January records in Irwin
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 50.0°F (1981) | -40.0°F (1979) | 0.31 in (1969) |
| January 2 | 46.0°F (1981) | -34.1°F (1974) | 0.72 in (1997) |
| January 3 | 43.0°F (1981) | -22.0°F (1971) | 0.50 in (1994) |
| January 4 | 46.9°F (2026) | -27.9°F (1971) | 0.43 in (2008) |
| January 5 | 45.0°F (1983) | -31.0°F (1970) | 0.55 in (2010) |
| January 6 | 46.9°F (1983) | -26.0°F (1970) | 0.45 in (1964) |
| January 7 | 45.0°F (1969) | -36.0°F (1979) | 0.68 in (2009) |
| January 8 | 45.0°F (1990) | -29.0°F (1964) | 0.42 in (2004) |
| January 9 | 46.9°F (1990) | -27.9°F (1977) | 0.67 in (1988) |
| January 10 | 46.9°F (1990) | -15.0°F (1974) | 0.75 in (1997) |
| January 11 | 46.9°F (1990) | -24.0°F (1963) | 0.48 in (1979) |
| January 12 | 44.1°F (1980) | -38.0°F (1963) | 0.36 in (1991) |
| January 13 | 44.1°F (1973) | -26.0°F (1963) | 0.53 in (1991) |
| January 14 | 46.9°F (1995) | -20.0°F (2007) | 0.27 in (2024) |
| January 15 | 46.0°F (1974) | -27.9°F (1964) | 1.10 in (2011) |
| January 16 | 55.0°F (1974) | -15.0°F (2001) | 0.56 in (1971) |
| January 17 | 46.9°F (1974) | -20.0°F (2001) | 0.69 in (2016) |
| January 18 | 43.0°F (1971) | -29.9°F (1984) | 0.50 in (2011) |
| January 19 | 45.0°F (1971) | -43.1°F (1963) | 0.59 in (1972) |
| January 20 | 46.9°F (1967) | -22.0°F (1984) | 0.52 in (1970) |
| January 21 | 51.1°F (2000) | -23.1°F (2025) | 0.35 in (1999) |
| January 22 | 46.0°F (1981) | -32.1°F (1962) | 1.03 in (1970) |
| January 23 | 44.1°F (1981) | -20.9°F (1962) | 1.40 in (1982) |
| January 24 | 50.0°F (1992) | -23.1°F (1978) | 0.30 in (1996) |
| January 25 | 48.0°F (1992) | -24.0°F (1966) | 0.80 in (2009) |
| January 26 | 48.0°F (1987) | -20.9°F (1963) | 0.38 in (1965) |
| January 27 | 48.0°F (1982) | -17.0°F (1961) | 0.56 in (1970) |
| January 28 | 45.0°F (1992) | -23.1°F (1980) | 0.79 in (2023) |
| January 29 | 45.0°F (1992) | -33.0°F (1979) | 0.50 in (2002) |
| January 30 | 46.0°F (1971) | -29.0°F (1979) | 0.63 in (2004) |
| January 31 | 50.0°F (2003) | -29.9°F (1985) | 0.45 in (1995) |