January weather in Lake Geneva, WI
The average temperature in Lake Geneva in January is 22.6°F (15.1°F–30.0°F). Average precipitation: 1.90 inches. Average snowfall is 13.9 inches.
January is a winter month in Lake Geneva, and is cooler than the annual average of 49.4°F. Daily temperatures swing about 14.9°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 9h 12m. For travel, January is cold.
Avg High
30.0°F
Avg Low
15.1°F
Precipitation
1.90 in
Snow
13.9 in
January records in Lake Geneva
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 44.1°F (1950) | -15.0°F (1968) | 1.12 in (1985) |
| January 2 | 55.0°F (2000) | -16.1°F (1979) | 1.15 in (1999) |
| January 3 | 52.0°F (1950) | -13.0°F (1979) | 0.99 in (1971) |
| January 4 | 59.0°F (1997) | -13.0°F (1969) | 1.14 in (1982) |
| January 5 | 52.0°F (1998) | -15.0°F (1999) | 0.68 in (1946) |
| January 6 | 48.0°F (1946) | -16.1°F (1988) | 0.70 in (1962) |
| January 7 | 46.9°F (1965) | -18.0°F (1968) | 0.52 in (1962) |
| January 8 | 53.1°F (1965) | -16.1°F (1971) | 0.84 in (1998) |
| January 9 | 57.0°F (2026) | -16.1°F (1982) | 0.46 in (1946) |
| January 10 | 53.1°F (1975) | -25.1°F (1982) | 0.98 in (1975) |
| January 11 | 53.1°F (1975) | -17.0°F (1962) | 0.74 in (2020) |
| January 12 | 51.1°F (1960) | -11.9°F (1974) | 2.41 in (1960) |
| January 13 | 54.0°F (1961) | -11.9°F (1963) | 0.98 in (2024) |
| January 14 | 53.1°F (2026) | -15.0°F (1994) | 0.94 in (1995) |
| January 15 | 52.0°F (1949) | -23.1°F (1994) | 0.85 in (1960) |
| January 16 | 51.1°F (1949) | -20.9°F (1977) | 0.59 in (1969) |
| January 17 | 50.0°F (1990) | -22.0°F (1982) | 0.46 in (1999) |
| January 18 | 57.9°F (1996) | -27.0°F (1994) | 0.69 in (2020) |
| January 19 | 46.0°F (1973) | -23.1°F (1994) | 0.82 in (1995) |
| January 20 | 46.0°F (1968) | -27.0°F (1985) | 1.20 in (1974) |
| January 21 | 52.0°F (1957) | -18.9°F (1963) | 0.80 in (1959) |
| January 22 | 51.1°F (1964) | -13.0°F (1970) | 0.95 in (1999) |
| January 23 | 53.1°F (1967) | -23.1°F (1963) | 0.74 in (1999) |
| January 24 | 57.0°F (1950) | -18.0°F (2026) | 0.72 in (1979) |
| January 25 | 57.0°F (1950) | -11.9°F (2025) | 1.17 in (1950) |
| January 26 | 54.0°F (1973) | -11.0°F (1957) | 1.30 in (1978) |
| January 27 | 55.0°F (2002) | -15.0°F (1955) | 0.67 in (1949) |
| January 28 | 48.0°F (2002) | -16.1°F (1966) | 0.50 in (1949) |
| January 29 | 46.9°F (1968) | -22.0°F (1966) | 1.25 in (1947) |
| January 30 | 50.0°F (1988) | -23.1°F (1951) | 1.67 in (1947) |
| January 31 | 57.9°F (1989) | -18.0°F (1996) | 0.77 in (2002) |