December weather in Stockton, IL
The average temperature in Stockton in December is 25.5°F (18.1°F–33.0°F). Average precipitation: 1.69 inches. Average snowfall is 8.0 inches.
December is a winter month in Stockton, and is cooler than the annual average of 47.9°F. Daily temperatures swing about 14.9°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 8h 55m. For travel, December is cold.
Avg High
33.0°F
Avg Low
18.1°F
Precipitation
1.69 in
Snow
8.0 in
December records in Stockton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 59.0°F (1962) | -2.0°F (2025) | 1.02 in (1985) |
| December 2 | 61.0°F (1962) | -5.1°F (1976) | 0.92 in (1982) |
| December 3 | 64.9°F (1998) | -8.0°F (1985) | 0.96 in (1990) |
| December 4 | 66.0°F (1998) | -7.1°F (2025) | 1.08 in (1973) |
| December 5 | 64.0°F (2001) | -7.1°F (2025) | 0.41 in (1948) |
| December 6 | 55.9°F (1951) | -9.9°F (1977) | 0.93 in (1943) |
| December 7 | 55.0°F (1946) | -9.0°F (1972) | 0.76 in (1969) |
| December 8 | 64.9°F (1946) | -11.9°F (2025) | 0.87 in (1966) |
| December 9 | 62.1°F (1946) | -16.1°F (1958) | 0.82 in (2003) |
| December 10 | 54.0°F (2015) | -16.1°F (1958) | 1.12 in (2003) |
| December 11 | 60.1°F (1949) | -11.9°F (1976) | 1.19 in (2007) |
| December 12 | 57.9°F (1949) | -11.0°F (1986) | 0.67 in (1972) |
| December 13 | 60.1°F (2015) | -14.1°F (1961) | 1.20 in (2015) |
| December 14 | 59.0°F (2015) | -17.0°F (1985) | 0.87 in (2011) |
| December 15 | 69.1°F (2021) | -15.0°F (1989) | 2.01 in (1971) |
| December 16 | 64.0°F (2021) | -14.1°F (1951) | 0.35 in (1970) |
| December 17 | 54.0°F (1984) | -11.9°F (1953) | 0.37 in (1951) |
| December 18 | 52.0°F (2002) | -17.0°F (1983) | 1.39 in (1957) |
| December 19 | 48.0°F (1957) | -18.0°F (1985) | 1.30 in (1968) |
| December 20 | 53.1°F (1988) | -20.0°F (1983) | 1.15 in (2012) |
| December 21 | 55.0°F (1967) | -20.0°F (1989) | 0.84 in (2006) |
| December 22 | 52.0°F (2019) | -18.9°F (1989) | 0.62 in (1979) |
| December 23 | 55.9°F (2015) | -20.9°F (1983) | 0.82 in (2015) |
| December 24 | 53.1°F (2019) | -24.0°F (1983) | 1.67 in (1965) |
| December 25 | 57.0°F (2019) | -20.9°F (2000) | 0.52 in (1957) |
| December 26 | 54.0°F (1982) | -15.0°F (1962) | 0.77 in (2023) |
| December 27 | 53.1°F (1959) | -17.0°F (1950) | 1.24 in (1988) |
| December 28 | 57.0°F (1984) | -14.1°F (1961) | 0.97 in (2015) |
| December 29 | 63.0°F (1984) | -9.9°F (1983) | 0.65 in (1972) |
| December 30 | 55.0°F (2002) | -11.9°F (2013) | 0.92 in (1971) |
| December 31 | 57.0°F (1965) | -16.1°F (1976) | 0.54 in (2018) |