January weather in Onalaska, WI
The average temperature in Onalaska in January is 18.9°F (10.5°F–27.4°F). Average precipitation: 1.25 inches. Average snowfall is 11.8 inches.
January is a winter month in Onalaska, and is cooler than the annual average of 48.8°F. Daily temperatures swing about 16.9°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 4m. For travel, January is cold.
Avg High
27.4°F
Avg Low
10.5°F
Precipitation
1.25 in
Snow
11.8 in
January records in Onalaska
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 48.0°F (1998) | -27.0°F (1947) | 0.49 in (1941) |
| January 2 | 51.1°F (1998) | -18.9°F (1979) | 0.57 in (1999) |
| January 3 | 51.1°F (1998) | -18.0°F (1947) | 0.91 in (2023) |
| January 4 | 48.0°F (2007) | -22.0°F (1942) | 0.73 in (1997) |
| January 5 | 54.0°F (2019) | -20.0°F (1972) | 1.42 in (1946) |
| January 6 | 48.9°F (2012) | -22.0°F (1971) | 0.47 in (1980) |
| January 7 | 55.9°F (2003) | -25.1°F (1942) | 0.31 in (2016) |
| January 8 | 55.0°F (2003) | -23.1°F (1971) | 0.96 in (2026) |
| January 9 | 53.1°F (2002) | -27.0°F (1977) | 0.23 in (2024) |
| January 10 | 53.1°F (2012) | -26.0°F (1982) | 0.81 in (2017) |
| January 11 | 48.9°F (2002) | -24.0°F (1977) | 0.35 in (1991) |
| January 12 | 48.0°F (2006) | -26.0°F (1977) | 0.73 in (1993) |
| January 13 | 48.0°F (2026) | -27.9°F (1965) | 0.63 in (1950) |
| January 14 | 45.0°F (1947) | -27.0°F (1965) | 0.53 in (1952) |
| January 15 | 46.0°F (1990) | -31.0°F (1963) | 0.60 in (1953) |
| January 16 | 51.1°F (1974) | -25.1°F (1982) | 0.78 in (1980) |
| January 17 | 48.9°F (1996) | -25.1°F (1982) | 0.34 in (2008) |
| January 18 | 50.0°F (1996) | -31.0°F (1967) | 0.55 in (1996) |
| January 19 | 48.0°F (2013) | -32.1°F (1970) | 0.59 in (1952) |
| January 20 | 50.0°F (1968) | -33.0°F (1994) | 0.31 in (1988) |
| January 21 | 46.9°F (1964) | -27.9°F (1970) | 0.50 in (2005) |
| January 22 | 51.1°F (1964) | -20.9°F (1963) | 0.85 in (2018) |
| January 23 | 48.9°F (1981) | -26.0°F (1963) | 0.57 in (1979) |
| January 24 | 54.0°F (1981) | -22.0°F (2008) | 1.31 in (1967) |
| January 25 | 57.0°F (1981) | -20.0°F (1966) | 0.47 in (2017) |
| January 26 | 54.0°F (2002) | -25.1°F (1963) | 0.98 in (1996) |
| January 27 | 54.0°F (2002) | -26.0°F (1950) | 0.90 in (1944) |
| January 28 | 54.0°F (2025) | -24.0°F (1965) | 0.32 in (2019) |
| January 29 | 44.1°F (2013) | -29.9°F (1965) | 0.67 in (2001) |
| January 30 | 57.9°F (2025) | -36.9°F (1951) | 0.31 in (1947) |
| January 31 | 53.1°F (2024) | -32.8°F (2019) | 0.27 in (2003) |