December weather in Vandalia, IL
The average temperature in Vandalia in December is 33.6°F (25.6°F–41.5°F). Average precipitation: 2.69 inches.
December is a winter month in Vandalia, and is cooler than the annual average of 54.2°F. Daily temperatures swing about 15.9°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 9h 17m. For travel, December is cold.
Avg High
41.5°F
Avg Low
25.6°F
Precipitation
2.69 in
Daylight
9h 17m
December records in Vandalia
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 63.0°F (1901) | 15.1°F (1975) | 1.93 in (2006) |
| December 2 | 68.0°F (1900) | 15.1°F (1976) | 1.05 in (1905) |
| December 3 | 72.0°F (1982) | 12.0°F (1976) | 1.05 in (1978) |
| December 4 | 70.0°F (1998) | 7.0°F (1991) | 1.23 in (1983) |
| December 5 | 70.0°F (1998) | 7.0°F (1991) | 0.85 in (1977) |
| December 6 | 66.0°F (1998) | 1.9°F (1977) | 0.41 in (1936) |
| December 7 | 71.1°F (1998) | 0.0°F (1977) | 1.36 in (2004) |
| December 8 | 66.9°F (1980) | 7.0°F (2005) | 1.00 in (1901) |
| December 9 | 64.0°F (1991) | 1.0°F (1995) | 1.00 in (2009) |
| December 10 | 59.0°F (1899) | 1.0°F (1995) | 1.17 in (1999) |
| December 11 | 62.1°F (1979) | 1.9°F (1977) | 1.83 in (1983) |
| December 12 | 64.9°F (1979) | 7.0°F (1986) | 1.28 in (2010) |
| December 13 | 64.9°F (1991) | -2.0°F (1903) | 2.00 in (1901) |
| December 14 | 64.9°F (1975) | -2.9°F (1903) | 0.96 in (2000) |
| December 15 | 64.0°F (1975) | -7.1°F (1901) | 2.08 in (1987) |
| December 16 | 61.0°F (1984) | -8.0°F (1989) | 0.57 in (1937) |
| December 17 | 66.0°F (1984) | -9.0°F (1989) | 1.32 in (2001) |
| December 18 | 62.1°F (1984) | -6.0°F (1901) | 0.63 in (1949) |
| December 19 | 64.9°F (1899) | -11.9°F (1901) | 1.58 in (1995) |
| December 20 | 61.0°F (1976) | -14.1°F (1901) | 1.23 in (1973) |
| December 21 | 62.1°F (1904) | -11.0°F (1989) | 1.16 in (2006) |
| December 22 | 66.9°F (1904) | -17.0°F (1989) | 0.95 in (1949) |
| December 23 | 60.1°F (1900) | -17.0°F (1989) | 1.17 in (2003) |
| December 24 | 66.0°F (1982) | -15.0°F (1989) | 1.87 in (1982) |
| December 25 | 64.9°F (1982) | -11.9°F (1983) | 2.10 in (1982) |
| December 26 | 62.1°F (1982) | -8.0°F (1983) | 0.60 in (1987) |
| December 27 | 64.0°F (2008) | 0.0°F (1983) | 2.00 in (1942) |
| December 28 | 68.0°F (2008) | 3.0°F (2000) | 1.98 in (2008) |
| December 29 | 69.1°F (1984) | -5.1°F (1983) | 1.07 in (2003) |
| December 30 | 66.0°F (1984) | -8.0°F (1983) | 2.45 in (1936) |
| December 31 | 62.1°F (2004) | -8.0°F (1983) | 0.78 in (2006) |