December weather in Cedarburg, WI
The average temperature in Cedarburg in December is 28.3°F (21.4°F–35.2°F). Average precipitation: 2.01 inches.
December is a winter month in Cedarburg, and is cooler than the annual average of 47.8°F. Daily temperatures swing about 13.8°F between overnight low and afternoon high. Daylight averages about 8h 48m. For travel, December is cold.
Avg High
35.2°F
Avg Low
21.4°F
Precipitation
2.01 in
Daylight
8h 48m
December records in Cedarburg
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 51.1°F (2017) | 12.9°F (2014) | 0.96 in (2019) |
| December 2 | 55.9°F (2012) | 12.0°F (2014) | 0.50 in (2018) |
| December 3 | 54.0°F (2012) | 14.0°F (2010) | 0.50 in (2018) |
| December 4 | 61.0°F (2012) | 3.9°F (2025) | 0.53 in (2011) |
| December 5 | 62.1°F (2017) | 3.9°F (2025) | 0.33 in (2016) |
| December 6 | 52.0°F (2015) | 9.0°F (2013) | 0.24 in (2021) |
| December 7 | 44.1°F (2012) | 1.9°F (2013) | 0.18 in (2009) |
| December 8 | 50.0°F (2023) | 3.0°F (2013) | 0.11 in (2014) |
| December 9 | 46.9°F (2023) | 10.9°F (2010) | 1.47 in (2009) |
| December 10 | 54.0°F (2024) | -6.0°F (2013) | 0.75 in (2012) |
| December 11 | 57.0°F (2015) | 1.0°F (2009) | 1.00 in (2021) |
| December 12 | 48.0°F (2011) | -2.9°F (2013) | 1.50 in (2010) |
| December 13 | 48.9°F (2021) | -2.0°F (2024) | 0.38 in (2020) |
| December 14 | 55.9°F (2015) | -6.0°F (2025) | 1.48 in (2015) |
| December 15 | 54.0°F (2011) | -6.0°F (2025) | 1.38 in (2022) |
| December 16 | 66.0°F (2021) | -2.9°F (2013) | 0.40 in (2012) |
| December 17 | 51.1°F (2015) | 0.0°F (2013) | 0.18 in (2023) |
| December 18 | 43.0°F (2025) | 3.0°F (2016) | 0.22 in (2016) |
| December 19 | 46.0°F (2025) | -2.9°F (2016) | 0.32 in (2012) |
| December 20 | 45.0°F (2011) | 1.9°F (2016) | 1.26 in (2012) |
| December 21 | 50.0°F (2015) | 1.0°F (2022) | 1.12 in (2012) |
| December 22 | 45.0°F (2019) | 1.0°F (2022) | 0.40 in (2013) |
| December 23 | 55.9°F (2019) | -9.0°F (2022) | 0.85 in (2014) |
| December 24 | 55.9°F (2015) | -9.9°F (2022) | 0.53 in (2009) |
| December 25 | 48.9°F (2023) | -0.9°F (2013) | 1.30 in (2009) |
| December 26 | 55.9°F (2019) | 1.0°F (2017) | 0.55 in (2016) |
| December 27 | 57.9°F (2019) | 0.0°F (2017) | 0.33 in (2021) |
| December 28 | 48.9°F (2014) | 1.0°F (2017) | 0.45 in (2018) |
| December 29 | 52.0°F (2024) | 7.0°F (2009) | 1.55 in (2015) |
| December 30 | 57.0°F (2022) | -8.0°F (2013) | 0.81 in (2020) |
| December 31 | 51.1°F (2024) | -8.0°F (2013) | 0.51 in (2011) |