January weather in Boise City, ID
The average temperature in Boise City in January is 32.2°F (25.5°F–38.8°F). Average precipitation: 1.41 inches. Average snowfall is 5.3 inches.
January is a winter month in Boise City, and is cooler than the annual average of 53.2°F. Daily temperatures swing about 13.3°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 6m. For travel, January is cold.
Avg High
38.8°F
Avg Low
25.5°F
Precipitation
1.41 in
Snow
5.3 in
January records in Boise City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 60.1°F (1997) | -13.0°F (1942) | 0.67 in (1997) |
| January 2 | 55.0°F (2009) | -5.1°F (1975) | 0.50 in (1940) |
| January 3 | 59.0°F (2026) | -5.1°F (1991) | 0.45 in (1965) |
| January 4 | 57.0°F (1956) | -9.0°F (1991) | 0.45 in (2017) |
| January 5 | 52.0°F (1954) | -11.9°F (1991) | 0.36 in (2022) |
| January 6 | 55.0°F (1948) | -10.8°F (2017) | 0.72 in (1964) |
| January 7 | 57.9°F (1948) | -9.9°F (1979) | 0.35 in (1960) |
| January 8 | 55.0°F (1953) | -14.1°F (1977) | 0.54 in (1994) |
| January 9 | 63.0°F (1953) | -13.0°F (1977) | 0.46 in (2018) |
| January 10 | 57.0°F (1995) | -8.0°F (1977) | 1.01 in (2017) |
| January 11 | 57.9°F (1959) | -6.0°F (1949) | 0.66 in (1979) |
| January 12 | 59.0°F (1953) | -7.1°F (1963) | 0.48 in (1991) |
| January 13 | 55.0°F (1969) | -0.9°F (1949) | 0.52 in (2024) |
| January 14 | 55.9°F (1978) | -2.0°F (1947) | 0.44 in (1941) |
| January 15 | 55.9°F (1951) | -9.9°F (1947) | 0.46 in (1978) |
| January 16 | 57.0°F (2000) | -0.8°F (2017) | 0.77 in (2011) |
| January 17 | 55.9°F (1951) | -7.1°F (1984) | 0.84 in (1953) |
| January 18 | 57.9°F (2018) | -13.0°F (1984) | 1.13 in (1953) |
| January 19 | 54.0°F (1971) | -9.9°F (1984) | 0.91 in (1969) |
| January 20 | 57.0°F (1953) | -8.0°F (1984) | 0.50 in (1972) |
| January 21 | 53.1°F (1943) | -11.9°F (1962) | 0.60 in (1969) |
| January 22 | 53.1°F (1954) | -11.0°F (1962) | 0.46 in (1946) |
| January 23 | 57.0°F (1953) | -11.9°F (1962) | 0.51 in (1982) |
| January 24 | 57.0°F (1959) | -6.0°F (1949) | 0.32 in (1964) |
| January 25 | 59.0°F (1953) | -5.1°F (1949) | 0.31 in (1964) |
| January 26 | 55.0°F (1971) | -8.0°F (1957) | 0.74 in (2020) |
| January 27 | 52.0°F (1940) | -9.0°F (1957) | 0.72 in (2003) |
| January 28 | 55.9°F (1954) | -6.0°F (1957) | 0.77 in (1965) |
| January 29 | 57.9°F (2024) | -9.0°F (1957) | 0.48 in (2014) |
| January 30 | 61.0°F (2024) | -13.0°F (1979) | 0.49 in (1963) |
| January 31 | 66.0°F (2024) | -17.0°F (1950) | 0.42 in (1963) |