January weather in Idaho Falls, ID
The average temperature in Idaho Falls in January is 23.2°F (16.1°F–30.2°F). Average precipitation: 1.06 inches.
January is a winter month in Idaho Falls, and is cooler than the annual average of 46.5°F. Daily temperatures swing about 14.1°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 7m. For travel, January is cold.
Avg High
30.2°F
Avg Low
16.1°F
Precipitation
1.06 in
Daylight
9h 7m
January records in Idaho Falls
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 52.0°F (1997) | -27.0°F (1979) | 1.60 in (1986) |
| January 2 | 51.1°F (1997) | -20.0°F (1974) | 0.59 in (1997) |
| January 3 | 50.0°F (2026) | -14.1°F (1974) | 0.49 in (2006) |
| January 4 | 45.0°F (1998) | -20.0°F (1973) | 0.36 in (1977) |
| January 5 | 46.9°F (1965) | -16.1°F (1970) | 0.39 in (1972) |
| January 6 | 45.0°F (1956) | -18.0°F (1979) | 0.58 in (1989) |
| January 7 | 48.0°F (1956) | -20.0°F (1955) | 0.20 in (2024) |
| January 8 | 50.0°F (2009) | -20.0°F (1979) | 0.41 in (1980) |
| January 9 | 48.9°F (1995) | -16.1°F (1974) | 0.30 in (1994) |
| January 10 | 53.1°F (1990) | -11.0°F (1987) | 0.35 in (1980) |
| January 11 | 48.9°F (1990) | -22.0°F (1963) | 0.60 in (1993) |
| January 12 | 48.9°F (1953) | -29.0°F (1963) | 0.43 in (1980) |
| January 13 | 50.0°F (1969) | -18.0°F (1963) | 0.13 in (1959) |
| January 14 | 50.0°F (1990) | -18.0°F (1964) | 0.44 in (1953) |
| January 15 | 48.9°F (1974) | -11.9°F (1964) | 0.45 in (1956) |
| January 16 | 55.0°F (1974) | -13.0°F (1957) | 0.47 in (1988) |
| January 17 | 46.0°F (1974) | -18.9°F (1960) | 0.37 in (2019) |
| January 18 | 46.0°F (2018) | -24.0°F (1984) | 0.50 in (1962) |
| January 19 | 50.0°F (1971) | -23.1°F (1960) | 0.35 in (2000) |
| January 20 | 55.0°F (1953) | -20.9°F (1984) | 0.34 in (1957) |
| January 21 | 48.0°F (1969) | -18.9°F (1962) | 0.44 in (2012) |
| January 22 | 45.0°F (1953) | -29.0°F (1962) | 0.25 in (1997) |
| January 23 | 52.0°F (1970) | -25.1°F (1962) | 0.44 in (2009) |
| January 24 | 46.9°F (1992) | -11.0°F (1962) | 0.41 in (1966) |
| January 25 | 53.1°F (1953) | -17.0°F (1989) | 0.28 in (2001) |
| January 26 | 48.0°F (2003) | -17.0°F (1989) | 0.28 in (2012) |
| January 27 | 48.0°F (1987) | -17.0°F (1957) | 0.42 in (1996) |
| January 28 | 50.0°F (1967) | -16.1°F (1980) | 0.37 in (2013) |
| January 29 | 46.9°F (2024) | -24.0°F (1979) | 0.33 in (2014) |
| January 30 | 51.1°F (2018) | -24.0°F (2023) | 0.51 in (2016) |
| January 31 | 57.0°F (2003) | -26.0°F (1985) | 0.42 in (1988) |