December weather in Mount Sterling, WI
The average temperature in Mount Sterling in December is 23.9°F (15.1°F–32.7°F). Average precipitation: 1.55 inches. Average snowfall is 9.7 inches.
December is a winter month in Mount Sterling, and is cooler than the annual average of 46.5°F. Daily temperatures swing about 17.6°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 8h 48m. For travel, December is cold.
Avg High
32.7°F
Avg Low
15.1°F
Precipitation
1.55 in
Snow
9.7 in
December records in Mount Sterling
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 55.9°F (1998) | 1.0°F (2025) | 0.70 in (1990) |
| December 2 | 60.1°F (1998) | 0.0°F (2005) | 1.52 in (2007) |
| December 3 | 61.0°F (1998) | 0.0°F (2005) | 0.27 in (1991) |
| December 4 | 64.9°F (2012) | -8.0°F (1991) | 0.69 in (2011) |
| December 5 | 63.0°F (2017) | -11.0°F (2005) | 0.37 in (2007) |
| December 6 | 64.9°F (2001) | -11.0°F (2007) | 0.41 in (2004) |
| December 7 | 51.1°F (1988) | -9.9°F (2005) | 0.31 in (1994) |
| December 8 | 53.1°F (2024) | -9.9°F (2005) | 0.22 in (2014) |
| December 9 | 54.0°F (2023) | -7.1°F (1995) | 0.94 in (2009) |
| December 10 | 53.1°F (2020) | -11.9°F (2013) | 0.47 in (2004) |
| December 11 | 55.9°F (2015) | -16.1°F (2009) | 0.32 in (2016) |
| December 12 | 48.9°F (1987) | -14.1°F (2009) | 0.48 in (1991) |
| December 13 | 48.0°F (1998) | -15.0°F (1986) | 0.74 in (2015) |
| December 14 | 59.0°F (2015) | -18.0°F (2010) | 2.48 in (2015) |
| December 15 | 57.9°F (2021) | -18.0°F (2010) | 0.76 in (2022) |
| December 16 | 69.1°F (2021) | -9.9°F (1989) | 0.61 in (1992) |
| December 17 | 48.0°F (2015) | -9.0°F (2008) | 0.46 in (2023) |
| December 18 | 55.9°F (2002) | -20.0°F (2016) | 0.40 in (2012) |
| December 19 | 48.9°F (2001) | -22.0°F (2016) | 0.67 in (2008) |
| December 20 | 51.1°F (1988) | -20.9°F (2016) | 0.26 in (1988) |
| December 21 | 46.0°F (2015) | -20.9°F (1989) | 0.35 in (1991) |
| December 22 | 48.0°F (2019) | -20.9°F (1989) | 0.40 in (2006) |
| December 23 | 52.0°F (2019) | -24.0°F (1989) | 0.81 in (2007) |
| December 24 | 52.0°F (2020) | -24.0°F (1989) | 0.63 in (2009) |
| December 25 | 54.0°F (2023) | -33.0°F (2000) | 0.90 in (2009) |
| December 26 | 55.0°F (2019) | -31.0°F (2000) | 0.82 in (2016) |
| December 27 | 50.0°F (2008) | -27.9°F (1990) | 0.48 in (1988) |
| December 28 | 50.0°F (2018) | -16.1°F (2000) | 0.78 in (2024) |
| December 29 | 53.1°F (2019) | -13.0°F (1993) | 1.28 in (2019) |
| December 30 | 54.0°F (2019) | -18.9°F (2013) | 0.24 in (2020) |
| December 31 | 55.0°F (2004) | -20.0°F (1990) | 0.52 in (2010) |