January weather in Fairfax, IA
The average temperature in Fairfax in January is 19.6°F (11.3°F–27.9°F). Average precipitation: 0.95 inches.
January is a winter month in Fairfax, and is cooler than the annual average of 48.3°F. Daily temperatures swing about 16.6°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 16m. For travel, January is cold.
Avg High
27.9°F
Avg Low
11.3°F
Precipitation
0.95 in
Daylight
9h 16m
January records in Fairfax
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 46.0°F (1954) | -23.8°F (2018) | 0.86 in (1965) |
| January 2 | 52.0°F (2000) | -22.9°F (2018) | 0.77 in (1999) |
| January 3 | 52.0°F (1998) | -14.8°F (2014) | 1.17 in (1971) |
| January 4 | 54.0°F (1997) | -20.9°F (1999) | 0.33 in (1990) |
| January 5 | 59.0°F (2012) | -25.1°F (1999) | 0.42 in (1991) |
| January 6 | 53.1°F (1961) | -17.0°F (1970) | 0.34 in (1995) |
| January 7 | 55.0°F (2003) | -18.0°F (1968) | 0.48 in (2019) |
| January 8 | 64.0°F (2003) | -17.0°F (1970) | 0.54 in (2026) |
| January 9 | 57.9°F (2002) | -18.9°F (1982) | 1.18 in (2024) |
| January 10 | 54.0°F (2012) | -24.0°F (1982) | 0.48 in (2020) |
| January 11 | 53.1°F (2012) | -20.0°F (1977) | 0.70 in (1960) |
| January 12 | 53.1°F (2006) | -27.9°F (1974) | 2.02 in (1960) |
| January 13 | 57.0°F (1961) | -13.9°F (2024) | 0.46 in (1979) |
| January 14 | 46.0°F (1990) | -22.0°F (2009) | 0.81 in (1960) |
| January 15 | 55.9°F (1990) | -29.0°F (2009) | 0.35 in (1969) |
| January 16 | 54.0°F (1990) | -27.9°F (2009) | 1.19 in (1980) |
| January 17 | 55.9°F (1996) | -23.1°F (1982) | 0.51 in (2020) |
| January 18 | 55.9°F (1996) | -23.1°F (1994) | 0.77 in (1973) |
| January 19 | 52.0°F (2006) | -24.0°F (1994) | 1.12 in (1988) |
| January 20 | 48.9°F (1981) | -22.0°F (1985) | 0.23 in (1993) |
| January 21 | 55.9°F (1957) | -23.1°F (1970) | 0.45 in (1999) |
| January 22 | 57.9°F (2002) | -15.0°F (1963) | 0.93 in (1965) |
| January 23 | 52.0°F (1981) | -20.9°F (1963) | 1.17 in (1969) |
| January 24 | 59.0°F (1981) | -23.1°F (2008) | 0.52 in (1967) |
| January 25 | 61.0°F (1981) | -17.9°F (2019) | 0.44 in (2021) |
| January 26 | 63.0°F (2002) | -16.8°F (2019) | 0.96 in (1974) |
| January 27 | 62.1°F (2002) | -15.0°F (1955) | 0.27 in (2013) |
| January 28 | 53.1°F (2025) | -20.0°F (1972) | 0.75 in (2006) |
| January 29 | 57.9°F (2013) | -24.0°F (1966) | 0.61 in (2001) |
| January 30 | 55.9°F (2012) | -25.8°F (2019) | 0.50 in (2021) |
| January 31 | 64.9°F (1989) | -29.7°F (2019) | 0.37 in (2015) |