December weather in Galesburg, IL
The average temperature in Galesburg in December is 27.8°F (20.2°F–35.4°F). Average precipitation: 2.14 inches. Average snowfall is 5.9 inches.
December is a winter month in Galesburg, and is cooler than the annual average of 50.2°F. Daily temperatures swing about 15.2°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 9h 4m. For travel, December is cold.
Avg High
35.4°F
Avg Low
20.2°F
Precipitation
2.14 in
Snow
5.9 in
December records in Galesburg
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 62.1°F (1962) | 5.0°F (1976) | 1.22 in (1985) |
| December 2 | 66.0°F (1962) | 0.0°F (1942) | 0.84 in (1986) |
| December 3 | 69.1°F (1970) | -4.0°F (1942) | 2.56 in (1982) |
| December 4 | 70.0°F (2012) | -4.0°F (1991) | 1.57 in (1973) |
| December 5 | 66.9°F (2001) | -5.1°F (1977) | 1.65 in (1909) |
| December 6 | 64.9°F (1951) | -6.0°F (1977) | 1.00 in (1908) |
| December 7 | 62.1°F (1946) | -9.0°F (1976) | 1.36 in (1994) |
| December 8 | 66.0°F (1946) | -9.9°F (1976) | 1.81 in (1980) |
| December 9 | 62.1°F (1946) | -7.1°F (1977) | 3.28 in (2003) |
| December 10 | 60.1°F (1979) | -7.1°F (1972) | 1.05 in (1970) |
| December 11 | 64.0°F (1949) | -9.0°F (1972) | 2.00 in (1899) |
| December 12 | 64.0°F (1991) | -9.9°F (1962) | 1.75 in (1946) |
| December 13 | 63.0°F (1975) | -14.1°F (1903) | 0.75 in (1928) |
| December 14 | 63.0°F (1975) | -13.0°F (1901) | 1.91 in (2011) |
| December 15 | 62.1°F (1971) | -17.0°F (1989) | 0.94 in (2011) |
| December 16 | 72.0°F (2021) | -11.9°F (1963) | 1.48 in (1992) |
| December 17 | 57.0°F (2006) | -6.0°F (1985) | 1.00 in (1895) |
| December 18 | 62.1°F (1939) | -16.1°F (1983) | 0.82 in (2002) |
| December 19 | 59.0°F (1988) | -18.0°F (1983) | 1.65 in (1895) |
| December 20 | 62.1°F (1949) | -16.1°F (1901) | 1.22 in (1987) |
| December 21 | 60.1°F (1967) | -22.0°F (1963) | 1.05 in (1949) |
| December 22 | 59.0°F (1957) | -20.9°F (1989) | 0.93 in (1941) |
| December 23 | 60.1°F (1982) | -20.9°F (1989) | 1.16 in (1932) |
| December 24 | 62.1°F (1955) | -20.9°F (1983) | 2.11 in (1965) |
| December 25 | 61.0°F (2021) | -15.0°F (1983) | 1.44 in (2009) |
| December 26 | 60.1°F (2019) | -15.0°F (1962) | 1.00 in (1904) |
| December 27 | 63.0°F (1946) | -8.0°F (1951) | 2.32 in (1942) |
| December 28 | 68.0°F (1984) | -9.9°F (1961) | 1.06 in (2008) |
| December 29 | 64.0°F (1984) | -8.0°F (1909) | 1.05 in (2015) |
| December 30 | 63.0°F (2022) | -14.1°F (1909) | 1.48 in (1936) |
| December 31 | 61.0°F (2002) | -14.1°F (1967) | 0.92 in (1931) |