December weather in Irmo, SC
The average temperature in Irmo in December is 43.7°F (31.2°F–56.2°F). Average precipitation: 4.19 inches.
December is a winter month in Irmo, and is cooler than the annual average of 60.2°F. Daily temperatures swing about 25°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 44m. For travel, December is cool.
Avg High
56.2°F
Avg Low
31.2°F
Precipitation
4.19 in
Daylight
9h 44m
December records in Irmo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 79.0°F (2014) | 17.1°F (1999) | 0.63 in (2010) |
| December 2 | 75.0°F (2006) | 16.0°F (1999) | 1.34 in (2018) |
| December 3 | 75.9°F (1998) | 18.0°F (1999) | 1.32 in (2009) |
| December 4 | 78.1°F (2021) | 10.0°F (2000) | 0.47 in (2013) |
| December 5 | 75.9°F (1998) | 12.9°F (2000) | 0.78 in (2005) |
| December 6 | 81.0°F (1998) | 12.9°F (2000) | 0.76 in (2005) |
| December 7 | 80.1°F (1998) | 12.0°F (2010) | 0.40 in (1995) |
| December 8 | 79.0°F (1998) | 10.0°F (2010) | 0.47 in (2021) |
| December 9 | 81.0°F (1998) | 10.9°F (2006) | 1.85 in (2018) |
| December 10 | 77.0°F (2007) | 10.9°F (2006) | 1.02 in (2023) |
| December 11 | 79.0°F (2007) | 14.0°F (1995) | 2.40 in (2008) |
| December 12 | 79.0°F (2007) | 1.0°F (1993) | 0.93 in (2008) |
| December 13 | 79.0°F (2007) | 14.0°F (1993) | 1.19 in (2012) |
| December 14 | 78.1°F (2007) | 12.0°F (2010) | 2.43 in (2019) |
| December 15 | 73.9°F (2007) | 9.0°F (2010) | 1.35 in (2013) |
| December 16 | 75.9°F (1995) | 9.0°F (2010) | 1.65 in (1998) |
| December 17 | 75.0°F (2008) | 19.0°F (2000) | 0.82 in (2012) |
| December 18 | 75.0°F (2008) | 16.0°F (2007) | 1.68 in (2023) |
| December 19 | 78.1°F (2016) | 16.0°F (2007) | 1.90 in (2009) |
| December 20 | 73.9°F (2006) | 9.0°F (1996) | 0.64 in (2020) |
| December 21 | 73.9°F (2008) | 9.0°F (1996) | 1.35 in (2017) |
| December 22 | 78.1°F (2013) | 9.0°F (1996) | 2.80 in (2015) |
| December 23 | 78.1°F (2013) | 10.0°F (2000) | 3.80 in (1994) |
| December 24 | 73.9°F (2017) | 10.0°F (2000) | 1.80 in (2014) |
| December 25 | 75.0°F (2015) | 10.9°F (1995) | 0.95 in (1998) |
| December 26 | 77.0°F (2015) | 10.0°F (2022) | 2.00 in (2009) |
| December 27 | 75.9°F (2021) | 10.0°F (2022) | 1.43 in (2023) |
| December 28 | 75.9°F (2015) | 12.9°F (1995) | 0.55 in (2018) |
| December 29 | 78.1°F (2015) | 12.0°F (1995) | 1.43 in (2013) |
| December 30 | 73.9°F (1996) | 12.0°F (1995) | 0.63 in (2018) |
| December 31 | 70.0°F (1996) | 8.1°F (2000) | 1.63 in (2015) |