December weather in Onarga, IL
The average temperature in Onarga in December is 30.8°F (21.5°F–40.2°F). Average precipitation: 3.01 inches. Average snowfall is 6.2 inches.
December is a winter month in Onarga, and is cooler than the annual average of 51.9°F. Daily temperatures swing about 18.7°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 6m. For travel, December is cold.
Avg High
40.2°F
Avg Low
21.5°F
Precipitation
3.01 in
Snow
6.2 in
December records in Onarga
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 68.0°F (1970) | 10.0°F (1985) | 1.16 in (1986) |
| December 2 | 70.0°F (1982) | 5.0°F (1976) | 0.71 in (2007) |
| December 3 | 68.0°F (1970) | 5.0°F (1976) | 2.67 in (1982) |
| December 4 | 73.9°F (2012) | -0.9°F (1991) | 0.76 in (1947) |
| December 5 | 68.0°F (1998) | 0.0°F (1991) | 0.82 in (1999) |
| December 6 | 68.0°F (2001) | -4.0°F (1977) | 0.99 in (1994) |
| December 7 | 64.0°F (1998) | -6.0°F (1977) | 1.54 in (2004) |
| December 8 | 59.0°F (1980) | -6.0°F (2005) | 0.63 in (2004) |
| December 9 | 66.0°F (1991) | -6.0°F (1977) | 0.72 in (2009) |
| December 10 | 62.1°F (1971) | -9.0°F (1977) | 1.33 in (1971) |
| December 11 | 60.1°F (1979) | -8.0°F (1977) | 1.46 in (1971) |
| December 12 | 60.1°F (1990) | -11.9°F (1989) | 2.22 in (2006) |
| December 13 | 62.1°F (1975) | -4.0°F (1989) | 1.39 in (1972) |
| December 14 | 64.0°F (1975) | -5.1°F (1989) | 0.91 in (1987) |
| December 15 | 62.1°F (1971) | -11.0°F (1989) | 0.97 in (2007) |
| December 16 | 64.0°F (1984) | -9.0°F (1989) | 0.87 in (1940) |
| December 17 | 55.9°F (2006) | -11.0°F (1985) | 0.54 in (2006) |
| December 18 | 53.1°F (2002) | -9.0°F (1983) | 0.28 in (2002) |
| December 19 | 57.0°F (1988) | -15.0°F (1983) | 1.08 in (1987) |
| December 20 | 60.1°F (1988) | -15.0°F (1989) | 1.23 in (1949) |
| December 21 | 46.9°F (1979) | -20.0°F (1989) | 3.09 in (1949) |
| December 22 | 55.9°F (1984) | -20.0°F (1989) | 2.05 in (1988) |
| December 23 | 61.0°F (1982) | -15.0°F (1989) | 0.98 in (2009) |
| December 24 | 60.1°F (1982) | -23.1°F (1983) | 1.22 in (1945) |
| December 25 | 62.1°F (1982) | -15.0°F (1983) | 1.22 in (2009) |
| December 26 | 55.0°F (1982) | -9.9°F (1983) | 0.62 in (1988) |
| December 27 | 60.1°F (1971) | -7.1°F (1990) | 1.78 in (2008) |
| December 28 | 63.0°F (1984) | 0.0°F (2000) | 1.39 in (2008) |
| December 29 | 69.1°F (1984) | -9.9°F (1981) | 1.17 in (1992) |
| December 30 | 63.0°F (1992) | -11.9°F (1981) | 1.36 in (1971) |
| December 31 | 61.0°F (2002) | -15.0°F (1976) | 1.22 in (2010) |