December weather in Thayer, IL
The average temperature in Thayer in December is 33.6°F (26.4°F–40.8°F). Average precipitation: 2.41 inches. Average snowfall is 3.3 inches.
December is a winter month in Thayer, and is cooler than the annual average of 54.8°F. Daily temperatures swing about 14.4°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 9h 13m. For travel, December is cold.
Avg High
40.8°F
Avg Low
26.4°F
Precipitation
2.41 in
Snow
3.3 in
December records in Thayer
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 71.1°F (1970) | 3.9°F (1964) | 2.54 in (2006) |
| December 2 | 70.0°F (1982) | 10.9°F (1979) | 1.95 in (1967) |
| December 3 | 73.9°F (1970) | 6.1°F (1985) | 4.25 in (1982) |
| December 4 | 71.1°F (1998) | 3.9°F (1991) | 1.40 in (1973) |
| December 5 | 69.1°F (1956) | 9.0°F (2005) | 1.39 in (1999) |
| December 6 | 70.0°F (1980) | -0.9°F (1984) | 0.60 in (1956) |
| December 7 | 64.0°F (1963) | -0.9°F (1976) | 1.07 in (1966) |
| December 8 | 69.1°F (1991) | 3.9°F (2006) | 1.30 in (1956) |
| December 9 | 61.0°F (1952) | -2.9°F (1977) | 1.51 in (2007) |
| December 10 | 63.0°F (1979) | -5.1°F (1977) | 3.00 in (1971) |
| December 11 | 66.9°F (1949) | 0.0°F (1977) | 1.86 in (1985) |
| December 12 | 63.0°F (1991) | -9.0°F (1962) | 1.70 in (1972) |
| December 13 | 66.9°F (1948) | -2.9°F (1962) | 0.63 in (2001) |
| December 14 | 68.0°F (1975) | -5.1°F (1963) | 1.60 in (1971) |
| December 15 | 72.0°F (1948) | -11.0°F (1989) | 1.52 in (1987) |
| December 16 | 64.9°F (1984) | -11.9°F (1951) | 0.47 in (1970) |
| December 17 | 60.1°F (1984) | -2.0°F (1950) | 0.80 in (2001) |
| December 18 | 64.0°F (1962) | -8.0°F (1981) | 0.80 in (1957) |
| December 19 | 59.0°F (1957) | -15.0°F (1983) | 0.98 in (1973) |
| December 20 | 66.9°F (1988) | -13.0°F (1989) | 0.98 in (1987) |
| December 21 | 64.9°F (1967) | -20.0°F (1989) | 2.14 in (1949) |
| December 22 | 61.0°F (1965) | -14.1°F (1983) | 1.02 in (1990) |
| December 23 | 64.9°F (1982) | -20.0°F (1989) | 1.63 in (2003) |
| December 24 | 64.0°F (1955) | -13.0°F (1983) | 2.16 in (2008) |
| December 25 | 62.1°F (1982) | -15.0°F (1983) | 1.83 in (2009) |
| December 26 | 61.0°F (1954) | -9.0°F (1983) | 0.62 in (1949) |
| December 27 | 64.9°F (1971) | -0.9°F (1990) | 1.73 in (1942) |
| December 28 | 71.1°F (1984) | -5.1°F (1961) | 1.36 in (2008) |
| December 29 | 66.9°F (1984) | -11.9°F (1983) | 1.03 in (1990) |
| December 30 | 63.0°F (2002) | -11.9°F (1983) | 1.32 in (1984) |
| December 31 | 66.0°F (2004) | -8.0°F (1976) | 1.69 in (1965) |