January weather in Pewaukee, WI
The average temperature in Pewaukee in January is 19.9°F (12.2°F–27.7°F). Average precipitation: 1.59 inches.
January is a winter month in Pewaukee, and is cooler than the annual average of 46.6°F. Daily temperatures swing about 15.5°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 9m. For travel, January is cold.
Avg High
27.7°F
Avg Low
12.2°F
Precipitation
1.59 in
Daylight
9h 9m
January records in Pewaukee
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 54.0°F (2011) | -9.9°F (2018) | 0.51 in (2019) |
| January 2 | 39.9°F (2020) | -9.9°F (2018) | 0.73 in (2012) |
| January 3 | 45.0°F (2020) | -11.0°F (2014) | 0.14 in (2015) |
| January 4 | 37.9°F (2019) | -9.0°F (2014) | 0.26 in (2015) |
| January 5 | 44.1°F (2019) | -9.9°F (2015) | 0.02 in (2014) |
| January 6 | 51.1°F (2019) | -16.1°F (2014) | 0.38 in (2026) |
| January 7 | 52.0°F (2008) | -17.0°F (2014) | 0.17 in (2019) |
| January 8 | 57.9°F (2008) | -15.0°F (2014) | 0.54 in (2019) |
| January 9 | 57.9°F (2026) | -14.1°F (2014) | 0.41 in (2008) |
| January 10 | 48.9°F (2020) | -11.9°F (2014) | 0.49 in (2024) |
| January 11 | 53.1°F (2018) | -5.1°F (2015) | 0.66 in (2013) |
| January 12 | 55.0°F (2012) | -4.0°F (2016) | 0.17 in (2024) |
| January 13 | 45.0°F (2013) | -4.0°F (2016) | 0.46 in (2024) |
| January 14 | 52.0°F (2026) | -5.1°F (2009) | 0.07 in (2009) |
| January 15 | 37.9°F (2016) | -13.0°F (2009) | 0.33 in (2021) |
| January 16 | 44.1°F (2023) | -16.1°F (2009) | 0.13 in (2021) |
| January 17 | 45.0°F (2023) | -16.1°F (2009) | 0.59 in (2017) |
| January 18 | 52.0°F (2025) | -8.0°F (2016) | 0.60 in (2020) |
| January 19 | 39.9°F (2013) | -8.0°F (2008) | 0.27 in (2019) |
| January 20 | 43.0°F (2013) | -9.9°F (2008) | 0.47 in (2017) |
| January 21 | 51.1°F (2018) | -11.9°F (2025) | 0.18 in (2012) |
| January 22 | 55.9°F (2017) | -11.9°F (2025) | 0.39 in (2018) |
| January 23 | 42.1°F (2017) | -17.0°F (2026) | 0.83 in (2018) |
| January 24 | 39.9°F (2012) | -17.0°F (2026) | 0.27 in (2010) |
| January 25 | 39.9°F (2010) | -15.0°F (2026) | 0.36 in (2020) |
| January 26 | 39.0°F (2018) | -17.0°F (2019) | 0.20 in (2017) |
| January 27 | 46.9°F (2018) | -17.0°F (2019) | 0.22 in (2024) |
| January 28 | 44.1°F (2018) | -15.0°F (2014) | 0.42 in (2019) |
| January 29 | 46.0°F (2008) | -14.1°F (2014) | 0.49 in (2013) |
| January 30 | 59.0°F (2013) | -33.0°F (2019) | 0.78 in (2013) |
| January 31 | 55.9°F (2025) | -29.9°F (2019) | 0.33 in (2021) |