December weather in Waupun, WI
The average temperature in Waupun in December is 23.1°F (15.0°F–31.2°F). Average precipitation: 1.95 inches.
December is a winter month in Waupun, and is cooler than the annual average of 45.4°F. Daily temperatures swing about 16.2°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 8h 46m. For travel, December is cold.
Avg High
31.2°F
Avg Low
15.0°F
Precipitation
1.95 in
Daylight
8h 46m
December records in Waupun
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 50.0°F (2017) | 3.0°F (2025) | 0.49 in (2015) |
| December 2 | 52.0°F (2012) | 3.0°F (2025) | 1.38 in (2007) |
| December 3 | 50.0°F (2017) | 5.0°F (2006) | 0.37 in (2023) |
| December 4 | 62.1°F (2012) | -5.1°F (2025) | 0.78 in (2011) |
| December 5 | 59.0°F (2017) | -5.1°F (2025) | 0.40 in (2016) |
| December 6 | 45.0°F (2015) | -9.9°F (2007) | 0.17 in (2008) |
| December 7 | 42.1°F (2012) | -7.1°F (2007) | 0.12 in (2007) |
| December 8 | 46.0°F (2024) | -2.9°F (2007) | 0.23 in (2014) |
| December 9 | 54.0°F (2023) | -2.9°F (2007) | 1.34 in (2009) |
| December 10 | 51.1°F (2020) | -8.0°F (2013) | 0.47 in (2025) |
| December 11 | 55.0°F (2015) | -9.9°F (2009) | 0.79 in (2021) |
| December 12 | 44.1°F (2011) | -9.9°F (2013) | 1.01 in (2010) |
| December 13 | 45.0°F (2006) | -9.0°F (2025) | 0.36 in (2015) |
| December 14 | 57.9°F (2015) | -9.9°F (2025) | 1.54 in (2015) |
| December 15 | 53.1°F (2015) | -9.9°F (2010) | 0.87 in (2022) |
| December 16 | 64.0°F (2021) | -7.1°F (2013) | 0.43 in (2012) |
| December 17 | 48.9°F (2015) | -8.0°F (2008) | 0.34 in (2016) |
| December 18 | 44.1°F (2006) | -9.9°F (2016) | 0.29 in (2016) |
| December 19 | 43.0°F (2018) | -18.9°F (2016) | 0.68 in (2008) |
| December 20 | 43.0°F (2006) | -13.0°F (2016) | 0.90 in (2012) |
| December 21 | 45.0°F (2015) | -11.0°F (2008) | 1.18 in (2012) |
| December 22 | 46.0°F (2019) | -11.0°F (2008) | 0.37 in (2013) |
| December 23 | 51.1°F (2019) | -13.0°F (2022) | 1.18 in (2007) |
| December 24 | 53.1°F (2015) | -15.0°F (2013) | 0.55 in (2009) |
| December 25 | 48.9°F (2023) | -16.1°F (2013) | 0.91 in (2009) |
| December 26 | 54.0°F (2019) | -11.0°F (2008) | 0.39 in (2016) |
| December 27 | 48.0°F (2019) | -11.9°F (2017) | 0.40 in (2021) |
| December 28 | 46.9°F (2018) | -11.9°F (2017) | 0.56 in (2008) |
| December 29 | 48.0°F (2019) | -0.9°F (2017) | 1.20 in (2015) |
| December 30 | 54.0°F (2019) | -20.9°F (2013) | 0.46 in (2019) |
| December 31 | 46.9°F (2010) | -20.9°F (2013) | 0.40 in (2019) |