December weather in West Salem, WI
The average temperature in West Salem in December is 22.3°F (15.4°F–29.2°F). Average precipitation: 1.49 inches. Average snowfall is 14.5 inches.
December is a winter month in West Salem, and is cooler than the annual average of 45.6°F. Daily temperatures swing about 13.8°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 8h 44m. For travel, December is cold.
Avg High
29.2°F
Avg Low
15.4°F
Precipitation
1.49 in
Snow
14.5 in
December records in West Salem
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 54.0°F (2003) | 1.0°F (2014) | 0.33 in (2018) |
| December 2 | 48.9°F (2021) | 3.9°F (2014) | 1.25 in (2007) |
| December 3 | 61.0°F (2012) | 5.0°F (2025) | 0.19 in (2023) |
| December 4 | 57.9°F (2017) | -2.9°F (2025) | 0.69 in (2011) |
| December 5 | 61.0°F (2001) | -2.0°F (2005) | 0.31 in (2007) |
| December 6 | 61.0°F (2001) | -6.0°F (2005) | 0.24 in (2004) |
| December 7 | 50.0°F (2023) | -7.1°F (2005) | 0.15 in (2007) |
| December 8 | 50.0°F (2023) | -2.0°F (2005) | 0.12 in (2013) |
| December 9 | 46.9°F (2020) | -5.1°F (2013) | 0.79 in (2009) |
| December 10 | 52.0°F (2020) | -4.0°F (2009) | 0.33 in (2021) |
| December 11 | 46.0°F (2006) | -6.0°F (2000) | 0.43 in (2010) |
| December 12 | 48.0°F (2001) | -9.0°F (2000) | 0.86 in (2010) |
| December 13 | 45.0°F (2006) | -9.0°F (2000) | 1.90 in (2015) |
| December 14 | 48.9°F (2023) | -11.9°F (2025) | 1.52 in (2015) |
| December 15 | 64.9°F (2021) | -9.0°F (2016) | 0.57 in (2022) |
| December 16 | 51.1°F (2021) | -9.0°F (2008) | 0.24 in (2016) |
| December 17 | 42.1°F (2001) | -8.0°F (2008) | 0.22 in (2008) |
| December 18 | 43.0°F (2018) | -17.0°F (2016) | 0.09 in (2012) |
| December 19 | 51.1°F (2002) | -9.0°F (2016) | 0.33 in (2008) |
| December 20 | 43.0°F (2015) | -9.0°F (2004) | 0.54 in (2012) |
| December 21 | 42.1°F (2019) | -11.9°F (2008) | 0.31 in (2004) |
| December 22 | 45.0°F (2019) | -15.0°F (2022) | 0.50 in (2006) |
| December 23 | 48.0°F (2020) | -15.0°F (2022) | 0.64 in (2015) |
| December 24 | 51.1°F (2023) | -14.1°F (2004) | 0.38 in (2009) |
| December 25 | 52.0°F (2023) | -14.1°F (2000) | 0.73 in (2016) |
| December 26 | 48.0°F (2023) | -13.0°F (2000) | 0.22 in (2009) |
| December 27 | 46.9°F (2008) | -11.0°F (2017) | 0.80 in (2018) |
| December 28 | 46.0°F (2003) | -4.0°F (2017) | 0.78 in (2019) |
| December 29 | 50.0°F (2019) | -9.9°F (2013) | 0.28 in (2019) |
| December 30 | 43.0°F (2002) | -15.0°F (2013) | 0.29 in (2019) |
| December 31 | 51.1°F (2004) | -14.1°F (2017) | 0.28 in (2006) |