December weather in St. Elmo, IL
The average temperature in St. Elmo in December is 34.2°F (26.7°F–41.6°F). Average precipitation: 2.15 inches.
December is a winter month in St. Elmo, and is cooler than the annual average of 54.6°F. Daily temperatures swing about 14.9°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 9h 16m. For travel, December is cold.
Avg High
41.6°F
Avg Low
26.7°F
Precipitation
2.15 in
Daylight
9h 16m
December records in St. Elmo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 57.9°F (1998) | 18.0°F (2002) | 1.36 in (2006) |
| December 2 | 64.0°F (1995) | 19.9°F (2005) | 0.16 in (1993) |
| December 3 | 64.9°F (1995) | 16.0°F (2006) | 0.40 in (2007) |
| December 4 | 66.0°F (1998) | 14.0°F (2006) | 0.11 in (2003) |
| December 5 | 66.0°F (1998) | 17.1°F (1997) | 0.39 in (1999) |
| December 6 | 68.0°F (1998) | 8.1°F (2002) | 0.32 in (1996) |
| December 7 | 62.1°F (1998) | 10.0°F (1995) | 0.61 in (1998) |
| December 8 | 50.0°F (2000) | 7.0°F (2006) | 0.22 in (2007) |
| December 9 | 53.1°F (1999) | 0.0°F (1995) | 0.29 in (1994) |
| December 10 | 59.0°F (2003) | 1.0°F (1995) | 1.29 in (1999) |
| December 11 | 61.0°F (1996) | 12.0°F (1995) | 0.17 in (2007) |
| December 12 | 63.0°F (1996) | 7.0°F (2000) | 0.63 in (2007) |
| December 13 | 57.9°F (2006) | 9.0°F (2000) | 0.19 in (2007) |
| December 14 | 59.0°F (2006) | 15.1°F (2000) | 0.74 in (1999) |
| December 15 | 60.1°F (1995) | 7.0°F (2000) | 0.37 in (1996) |
| December 16 | 57.9°F (2006) | 18.0°F (2005) | 0.35 in (1992) |
| December 17 | 61.0°F (2006) | 0.0°F (2000) | 0.28 in (1994) |
| December 18 | 63.0°F (2006) | 3.9°F (2000) | 0.50 in (1995) |
| December 19 | 62.1°F (2002) | -2.0°F (1996) | 1.56 in (1995) |
| December 20 | 55.9°F (1997) | -6.0°F (2000) | 0.24 in (1995) |
| December 21 | 53.1°F (1994) | 7.0°F (2000) | 1.12 in (2006) |
| December 22 | 57.0°F (2006) | 5.0°F (1998) | 0.75 in (1997) |
| December 23 | 57.0°F (1996) | 8.1°F (1998) | 0.46 in (2003) |
| December 24 | 50.0°F (1992) | 5.0°F (1996) | 0.98 in (1996) |
| December 25 | 43.0°F (2005) | 5.0°F (1996) | 0.35 in (2005) |
| December 26 | 51.1°F (2007) | 12.9°F (2000) | 0.21 in (2006) |
| December 27 | 52.0°F (1994) | 3.9°F (2000) | 0.22 in (2007) |
| December 28 | 57.0°F (1994) | 9.0°F (1995) | 0.28 in (2005) |
| December 29 | 60.1°F (2002) | 9.0°F (1995) | 1.01 in (2003) |
| December 30 | 59.0°F (2002) | 1.9°F (1993) | 0.25 in (2005) |
| December 31 | 59.0°F (2006) | 3.0°F (2000) | 0.54 in (2002) |