December weather in Hales Corners, WI
The average temperature in Hales Corners in December is 26.7°F (18.3°F–35.0°F). Average precipitation: 2.09 inches.
December is a winter month in Hales Corners, and is cooler than the annual average of 47.3°F. Daily temperatures swing about 16.7°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 8h 51m. For travel, December is cold.
Avg High
35.0°F
Avg Low
18.3°F
Precipitation
2.09 in
Daylight
8h 51m
December records in Hales Corners
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 53.1°F (2017) | 8.1°F (2025) | 0.72 in (2015) |
| December 2 | 59.0°F (2012) | 9.0°F (2006) | 1.14 in (2007) |
| December 3 | 60.1°F (2012) | 3.9°F (2006) | 0.29 in (2023) |
| December 4 | 66.0°F (2012) | 3.9°F (2025) | 0.43 in (2011) |
| December 5 | 62.1°F (2017) | -0.9°F (2005) | 0.42 in (2007) |
| December 6 | 54.0°F (2012) | -5.1°F (2007) | 0.28 in (2021) |
| December 7 | 46.9°F (2015) | -5.1°F (2005) | 0.41 in (2004) |
| December 8 | 52.0°F (2023) | -2.9°F (2005) | 0.40 in (2004) |
| December 9 | 55.0°F (2023) | 1.0°F (2006) | 1.35 in (2009) |
| December 10 | 50.0°F (2015) | -6.0°F (2013) | 0.60 in (2022) |
| December 11 | 57.0°F (2015) | -2.9°F (2009) | 1.90 in (2021) |
| December 12 | 46.9°F (2015) | -4.0°F (2013) | 1.43 in (2020) |
| December 13 | 55.0°F (2015) | -2.0°F (2024) | 0.32 in (2020) |
| December 14 | 61.0°F (2015) | -9.9°F (2025) | 1.26 in (2015) |
| December 15 | 55.0°F (2015) | -6.0°F (2010) | 1.04 in (2022) |
| December 16 | 66.0°F (2021) | -6.0°F (2013) | 0.42 in (2007) |
| December 17 | 52.0°F (2006) | -2.0°F (2013) | 0.50 in (2016) |
| December 18 | 48.0°F (2006) | -2.0°F (2016) | 0.25 in (2016) |
| December 19 | 48.0°F (2025) | -15.0°F (2016) | 0.95 in (2008) |
| December 20 | 48.9°F (2017) | -7.1°F (2016) | 0.72 in (2012) |
| December 21 | 51.1°F (2015) | -7.1°F (2008) | 1.23 in (2012) |
| December 22 | 50.0°F (2019) | -6.0°F (2008) | 0.88 in (2006) |
| December 23 | 54.0°F (2019) | -9.9°F (2022) | 0.71 in (2014) |
| December 24 | 55.9°F (2020) | -13.0°F (2022) | 0.50 in (2009) |
| December 25 | 51.1°F (2023) | -9.9°F (2004) | 1.30 in (2009) |
| December 26 | 57.0°F (2019) | -9.9°F (2017) | 0.99 in (2005) |
| December 27 | 57.0°F (2019) | -11.9°F (2017) | 0.27 in (2021) |
| December 28 | 53.1°F (2008) | -5.1°F (2017) | 1.08 in (2008) |
| December 29 | 48.9°F (2019) | 3.0°F (2017) | 1.74 in (2015) |
| December 30 | 57.0°F (2022) | -8.0°F (2013) | 0.56 in (2020) |
| December 31 | 55.0°F (2004) | -7.1°F (2013) | 0.18 in (2005) |