December weather in Plum City, WI
The average temperature in Plum City in December is 21.6°F (13.1°F–30.0°F). Average precipitation: 1.48 inches.
December is a winter month in Plum City, and is cooler than the annual average of 45.1°F. Daily temperatures swing about 16.9°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 8h 38m. For travel, December is cold.
Avg High
30.0°F
Avg Low
13.1°F
Precipitation
1.48 in
Daylight
8h 38m
December records in Plum City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 46.9°F (2017) | 1.0°F (2014) | 0.45 in (2015) |
| December 2 | 54.0°F (2017) | 1.9°F (2014) | 0.76 in (2007) |
| December 3 | 52.0°F (2012) | 1.9°F (2007) | 0.20 in (2013) |
| December 4 | 55.0°F (2017) | -4.0°F (2025) | 0.50 in (2010) |
| December 5 | 62.1°F (2017) | -5.1°F (2025) | 0.47 in (2001) |
| December 6 | 48.9°F (2015) | -8.0°F (2007) | 0.31 in (2016) |
| December 7 | 46.0°F (2012) | -6.0°F (2007) | 0.25 in (2007) |
| December 8 | 54.0°F (2024) | -8.0°F (2007) | 0.26 in (1995) |
| December 9 | 48.0°F (2023) | -8.0°F (2007) | 0.62 in (2003) |
| December 10 | 51.1°F (2020) | -2.9°F (2007) | 0.74 in (2012) |
| December 11 | 54.0°F (2020) | -7.1°F (2013) | 0.86 in (2021) |
| December 12 | 54.0°F (2020) | -8.0°F (2008) | 1.14 in (2010) |
| December 13 | 44.1°F (2012) | -9.9°F (2010) | 0.49 in (1995) |
| December 14 | 46.9°F (2014) | -18.0°F (2010) | 0.85 in (2015) |
| December 15 | 54.0°F (2023) | -18.0°F (2010) | 1.03 in (2015) |
| December 16 | 64.9°F (2021) | -13.0°F (2010) | 0.37 in (2021) |
| December 17 | 46.0°F (2025) | -13.0°F (2010) | 0.43 in (2016) |
| December 18 | 44.1°F (2025) | -15.0°F (2008) | 0.32 in (2000) |
| December 19 | 46.9°F (2018) | -18.0°F (2016) | 0.31 in (1999) |
| December 20 | 44.1°F (2018) | -15.0°F (2008) | 0.46 in (2012) |
| December 21 | 44.1°F (2015) | -11.9°F (2008) | 0.38 in (2010) |
| December 22 | 41.0°F (2016) | -16.1°F (2008) | 0.72 in (2006) |
| December 23 | 48.0°F (2020) | -16.1°F (2008) | 0.63 in (1996) |
| December 24 | 48.0°F (2020) | -11.9°F (2013) | 0.58 in (2015) |
| December 25 | 54.0°F (2023) | -15.0°F (2008) | 0.68 in (2009) |
| December 26 | 53.1°F (2023) | -16.1°F (2008) | 0.83 in (2023) |
| December 27 | 48.9°F (2011) | -11.9°F (2017) | 0.61 in (2018) |
| December 28 | 41.0°F (2024) | -11.0°F (2017) | 0.85 in (2018) |
| December 29 | 44.1°F (2013) | -2.0°F (2009) | 0.78 in (2025) |
| December 30 | 44.1°F (2019) | -20.9°F (2013) | 0.15 in (2020) |
| December 31 | 46.9°F (2010) | -20.9°F (2013) | 0.58 in (2019) |