January weather in Fairfield, IL
The average temperature in Fairfield in January is 32.8°F (24.5°F–41.1°F). Average precipitation: 3.33 inches.
January is a winter month in Fairfield, and is cooler than the annual average of 57.1°F. Daily temperatures swing about 16.6°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 9h 36m. For travel, January is cold.
Avg High
41.1°F
Avg Low
24.5°F
Precipitation
3.33 in
Daylight
9h 36m
January records in Fairfield
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 68.0°F (1952) | -9.9°F (1968) | 2.85 in (1948) |
| January 2 | 69.1°F (2000) | -5.1°F (2018) | 1.00 in (1903) |
| January 3 | 68.0°F (1939) | -2.9°F (1940) | 2.20 in (1907) |
| January 4 | 68.0°F (1949) | -2.0°F (1999) | 2.40 in (1950) |
| January 5 | 64.9°F (1955) | -11.0°F (1924) | 3.35 in (1917) |
| January 6 | 64.9°F (2008) | -8.0°F (1924) | 1.25 in (1918) |
| January 7 | 68.0°F (2008) | -18.0°F (1912) | 1.66 in (1989) |
| January 8 | 69.1°F (1965) | -11.0°F (1942) | 1.37 in (2008) |
| January 9 | 68.0°F (2026) | -7.1°F (1979) | 1.15 in (2024) |
| January 10 | 66.9°F (1911) | -15.0°F (1982) | 2.23 in (2020) |
| January 11 | 72.0°F (1911) | -18.0°F (1977) | 1.48 in (1913) |
| January 12 | 70.0°F (1898) | -18.0°F (1918) | 1.50 in (2013) |
| January 13 | 68.0°F (1960) | -17.0°F (1912) | 1.89 in (2005) |
| January 14 | 66.0°F (1928) | -9.0°F (1917) | 3.10 in (1937) |
| January 15 | 68.0°F (1949) | -8.0°F (1979) | 1.24 in (1950) |
| January 16 | 72.0°F (1990) | -15.0°F (1982) | 1.31 in (1935) |
| January 17 | 69.1°F (1990) | -23.1°F (1977) | 1.38 in (1932) |
| January 18 | 72.0°F (1906) | -22.0°F (1994) | 2.04 in (1949) |
| January 19 | 73.0°F (1906) | -23.1°F (1994) | 2.25 in (1990) |
| January 20 | 70.0°F (1906) | -17.0°F (1985) | 1.69 in (1906) |
| January 21 | 73.0°F (2017) | -17.0°F (1984) | 2.58 in (1999) |
| January 22 | 64.9°F (1964) | -8.0°F (1930) | 2.22 in (1962) |
| January 23 | 73.0°F (1967) | -9.9°F (1918) | 1.50 in (1913) |
| January 24 | 77.0°F (1943) | -11.9°F (1963) | 2.70 in (1949) |
| January 25 | 72.0°F (1950) | -5.1°F (1905) | 1.16 in (2021) |
| January 26 | 73.0°F (2021) | -18.0°F (1940) | 1.84 in (1950) |
| January 27 | 68.0°F (1944) | -22.0°F (1904) | 1.40 in (1994) |
| January 28 | 69.1°F (1914) | -16.1°F (1963) | 1.05 in (1969) |
| January 29 | 70.0°F (2002) | -9.0°F (1977) | 2.00 in (1969) |
| January 30 | 66.9°F (1931) | -9.9°F (1936) | 2.20 in (1916) |
| January 31 | 70.0°F (1917) | -9.9°F (1965) | 1.90 in (2002) |