January weather in Fairfield, ID
The average temperature in Fairfield in January is 18.3°F (9.2°F–27.3°F). Average precipitation: 2.11 inches.
January is a winter month in Fairfield, and is cooler than the annual average of 42.1°F. Daily temperatures swing about 18.1°F between overnight low and afternoon high. Daylight averages about 9h 8m. For travel, January is cold.
Avg High
27.3°F
Avg Low
9.2°F
Precipitation
2.11 in
Daylight
9h 8m
January records in Fairfield
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 46.0°F (1981) | -26.0°F (2011) | 1.04 in (2010) |
| January 2 | 46.0°F (1981) | -32.1°F (1952) | 1.26 in (1997) |
| January 3 | 42.1°F (2012) | -32.1°F (1952) | 0.63 in (1977) |
| January 4 | 43.0°F (2018) | -29.9°F (1971) | 0.55 in (1965) |
| January 5 | 45.0°F (2018) | -35.0°F (1971) | 1.00 in (1976) |
| January 6 | 42.1°F (1969) | -31.0°F (1971) | 0.48 in (1959) |
| January 7 | 41.0°F (1962) | -29.9°F (1982) | 0.46 in (1953) |
| January 8 | 44.1°F (2018) | -20.0°F (1974) | 0.90 in (1990) |
| January 9 | 46.0°F (1953) | -27.0°F (1949) | 0.50 in (1970) |
| January 10 | 44.1°F (1990) | -29.9°F (1949) | 0.67 in (1970) |
| January 11 | 45.0°F (1990) | -29.0°F (1949) | 0.78 in (1969) |
| January 12 | 46.9°F (1953) | -23.1°F (1963) | 1.56 in (1980) |
| January 13 | 50.0°F (2026) | -29.9°F (2007) | 0.61 in (1974) |
| January 14 | 46.9°F (1973) | -18.0°F (2017) | 0.87 in (1952) |
| January 15 | 44.1°F (1976) | -20.9°F (2007) | 1.21 in (1971) |
| January 16 | 42.1°F (1968) | -20.9°F (1987) | 0.82 in (1971) |
| January 17 | 46.0°F (1977) | -32.1°F (1952) | 0.87 in (2024) |
| January 18 | 48.0°F (1975) | -31.0°F (1984) | 1.87 in (2012) |
| January 19 | 46.0°F (1975) | -42.0°F (1984) | 1.14 in (2017) |
| January 20 | 44.1°F (1950) | -36.9°F (1984) | 1.12 in (1962) |
| January 21 | 43.0°F (1950) | -38.9°F (1984) | 1.54 in (1967) |
| January 22 | 44.1°F (1981) | -36.9°F (1962) | 0.81 in (1972) |
| January 23 | 44.1°F (1959) | -35.0°F (1962) | 2.07 in (2006) |
| January 24 | 45.0°F (1970) | -27.0°F (2008) | 0.68 in (1958) |
| January 25 | 45.0°F (1994) | -32.1°F (1949) | 0.45 in (1969) |
| January 26 | 46.9°F (1987) | -25.1°F (1949) | 1.06 in (2000) |
| January 27 | 43.0°F (1971) | -34.1°F (1957) | 1.60 in (2003) |
| January 28 | 46.9°F (1954) | -27.0°F (1957) | 0.53 in (1954) |
| January 29 | 44.1°F (1971) | -32.1°F (1951) | 0.94 in (2016) |
| January 30 | 46.9°F (1966) | -34.1°F (1951) | 0.50 in (1983) |
| January 31 | 46.0°F (1992) | -35.0°F (1956) | 0.97 in (1963) |