December weather in Diamond, IL
The average temperature in Diamond in December is 29.9°F (22.7°F–37.2°F). Average precipitation: 1.96 inches. Average snowfall is 6.1 inches.
December is a winter month in Diamond, and is cooler than the annual average of 51.1°F. Daily temperatures swing about 14.5°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 9h 2m. For travel, December is cold.
Avg High
37.2°F
Avg Low
22.7°F
Precipitation
1.96 in
Snow
6.1 in
December records in Diamond
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 60.1°F (1998) | 10.9°F (2002) | 0.76 in (2006) |
| December 2 | 60.1°F (2012) | 10.0°F (2002) | 0.55 in (1968) |
| December 3 | 64.0°F (2012) | 10.9°F (2005) | 3.40 in (1982) |
| December 4 | 71.1°F (2012) | 7.0°F (2006) | 0.66 in (1953) |
| December 5 | 66.9°F (1998) | 6.1°F (2005) | 1.30 in (1973) |
| December 6 | 69.1°F (2001) | 3.9°F (2005) | 0.57 in (1966) |
| December 7 | 53.1°F (1998) | -0.9°F (2005) | 1.38 in (1994) |
| December 8 | 51.1°F (2004) | -2.0°F (2005) | 1.16 in (1966) |
| December 9 | 51.1°F (1999) | 3.0°F (2006) | 0.54 in (1987) |
| December 10 | 53.1°F (1999) | 3.0°F (2009) | 1.00 in (1971) |
| December 11 | 57.9°F (2003) | 1.9°F (2009) | 0.93 in (1971) |
| December 12 | 50.0°F (2006) | 3.9°F (2000) | 0.90 in (1983) |
| December 13 | 55.9°F (1998) | -11.0°F (2000) | 0.82 in (1946) |
| December 14 | 48.9°F (1998) | -2.0°F (2000) | 1.02 in (1975) |
| December 15 | 57.0°F (2011) | 3.0°F (2000) | 1.46 in (2005) |
| December 16 | 53.1°F (1998) | 5.0°F (2008) | 0.90 in (1992) |
| December 17 | 55.0°F (2006) | 6.1°F (2009) | 0.25 in (1994) |
| December 18 | 52.0°F (2002) | -5.1°F (2000) | 0.40 in (1949) |
| December 19 | 55.0°F (1998) | 1.0°F (2005) | 0.77 in (2008) |
| December 20 | 52.0°F (2011) | -8.0°F (2000) | 1.13 in (1952) |
| December 21 | 51.1°F (2012) | -9.0°F (2000) | 1.22 in (1949) |
| December 22 | 54.0°F (2006) | -7.1°F (2000) | 1.74 in (1949) |
| December 23 | 54.0°F (2006) | -11.0°F (2000) | 1.00 in (1961) |
| December 24 | 46.0°F (2005) | -6.0°F (2008) | 0.83 in (1979) |
| December 25 | 44.1°F (2006) | -16.1°F (2000) | 2.43 in (1965) |
| December 26 | 45.0°F (2011) | -13.0°F (2000) | 1.00 in (1949) |
| December 27 | 52.0°F (2008) | -2.0°F (2004) | 0.71 in (1988) |
| December 28 | 60.1°F (2008) | 1.0°F (2000) | 1.16 in (2008) |
| December 29 | 50.0°F (2006) | 5.0°F (2010) | 1.05 in (1948) |
| December 30 | 55.0°F (2006) | 0.0°F (1998) | 1.35 in (1971) |
| December 31 | 60.1°F (2002) | 0.0°F (1998) | 0.97 in (1992) |