December weather in Prairie du Sac, WI
The average temperature in Prairie du Sac in December is 23.8°F (15.1°F–32.5°F). Average precipitation: 1.54 inches.
December is a winter month in Prairie du Sac, and is cooler than the annual average of 45.9°F. Daily temperatures swing about 17.4°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 8h 48m. For travel, December is cold.
Avg High
32.5°F
Avg Low
15.1°F
Precipitation
1.54 in
Daylight
8h 48m
December records in Prairie du Sac
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 51.1°F (2017) | 3.0°F (2025) | 0.38 in (2015) |
| December 2 | 52.0°F (2012) | 3.0°F (2014) | 0.64 in (2018) |
| December 3 | 54.0°F (2012) | 8.1°F (2010) | 0.25 in (2011) |
| December 4 | 64.0°F (2012) | -11.9°F (2025) | 0.81 in (2011) |
| December 5 | 62.1°F (2017) | -9.9°F (2025) | 0.21 in (2016) |
| December 6 | 48.9°F (2015) | 3.0°F (2010) | 0.05 in (2008) |
| December 7 | 44.1°F (2012) | -0.9°F (2013) | 0.15 in (2025) |
| December 8 | 53.1°F (2024) | -15.0°F (2025) | 0.28 in (2014) |
| December 9 | 55.0°F (2024) | -5.1°F (2025) | 0.66 in (2009) |
| December 10 | 54.0°F (2020) | -7.1°F (2013) | 0.56 in (2022) |
| December 11 | 57.0°F (2015) | -8.0°F (2009) | 0.95 in (2021) |
| December 12 | 46.0°F (2011) | -14.1°F (2009) | 0.76 in (2010) |
| December 13 | 46.0°F (2021) | -9.0°F (2008) | 0.24 in (2015) |
| December 14 | 60.1°F (2015) | -18.0°F (2010) | 1.69 in (2015) |
| December 15 | 57.9°F (2015) | -18.0°F (2010) | 1.29 in (2022) |
| December 16 | 69.1°F (2021) | -13.0°F (2010) | 0.42 in (2012) |
| December 17 | 50.0°F (2015) | -6.0°F (2008) | 0.28 in (2016) |
| December 18 | 43.0°F (2025) | -9.9°F (2016) | 0.17 in (2016) |
| December 19 | 46.0°F (2018) | -16.1°F (2016) | 0.75 in (2008) |
| December 20 | 48.0°F (2018) | -13.0°F (2016) | 0.35 in (2024) |
| December 21 | 46.0°F (2015) | -11.9°F (2008) | 0.20 in (2010) |
| December 22 | 48.9°F (2019) | -17.0°F (2008) | 0.34 in (2013) |
| December 23 | 54.0°F (2019) | -14.1°F (2022) | 0.44 in (2014) |
| December 24 | 55.9°F (2015) | -16.1°F (2013) | 0.62 in (2009) |
| December 25 | 53.1°F (2023) | -11.9°F (2008) | 0.71 in (2009) |
| December 26 | 57.0°F (2019) | -11.0°F (2017) | 0.34 in (2023) |
| December 27 | 50.0°F (2008) | -14.1°F (2017) | 0.28 in (2018) |
| December 28 | 50.0°F (2018) | -14.1°F (2017) | 0.49 in (2024) |
| December 29 | 51.1°F (2019) | -5.1°F (2010) | 0.95 in (2015) |
| December 30 | 54.0°F (2019) | -16.1°F (2013) | 0.31 in (2020) |
| December 31 | 45.0°F (2010) | -16.1°F (2013) | 0.10 in (2011) |