January weather in Mukwonago, WI
The average temperature in Mukwonago in January is 20.2°F (11.6°F–28.8°F). Average precipitation: 1.73 inches.
January is a winter month in Mukwonago, and is cooler than the annual average of 46.7°F. Daily temperatures swing about 17.2°F between overnight low and afternoon high. Daylight averages about 9h 11m. For travel, January is cold.
Avg High
28.8°F
Avg Low
11.6°F
Precipitation
1.73 in
Daylight
9h 11m
January records in Mukwonago
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 46.0°F (2012) | -11.9°F (2018) | 0.58 in (2019) |
| January 2 | 42.1°F (2020) | -9.9°F (2018) | 0.41 in (2021) |
| January 3 | 46.0°F (2020) | -14.1°F (2014) | 0.18 in (2015) |
| January 4 | 39.0°F (2023) | -16.1°F (2014) | 0.30 in (2015) |
| January 5 | 45.0°F (2019) | -9.9°F (2015) | 0.10 in (2014) |
| January 6 | 48.9°F (2019) | -13.0°F (2014) | 0.12 in (2015) |
| January 7 | 51.1°F (2012) | -17.0°F (2014) | 0.05 in (2024) |
| January 8 | 48.9°F (2019) | -17.0°F (2014) | 0.68 in (2019) |
| January 9 | 59.0°F (2026) | -18.9°F (2014) | 0.28 in (2026) |
| January 10 | 50.0°F (2020) | -18.9°F (2014) | 0.43 in (2024) |
| January 11 | 52.0°F (2018) | -11.9°F (2016) | 0.68 in (2013) |
| January 12 | 55.0°F (2012) | -9.0°F (2016) | 0.27 in (2024) |
| January 13 | 43.0°F (2022) | -5.1°F (2016) | 1.26 in (2024) |
| January 14 | 53.1°F (2026) | -13.0°F (2015) | 0.05 in (2024) |
| January 15 | 39.0°F (2016) | -4.0°F (2024) | 0.32 in (2021) |
| January 16 | 43.0°F (2023) | -4.0°F (2024) | 0.19 in (2021) |
| January 17 | 46.9°F (2023) | -6.0°F (2016) | 0.88 in (2017) |
| January 18 | 52.0°F (2025) | -9.9°F (2016) | 0.63 in (2020) |
| January 19 | 41.0°F (2015) | -9.9°F (2016) | 0.64 in (2019) |
| January 20 | 43.0°F (2013) | -7.1°F (2016) | 0.52 in (2017) |
| January 21 | 46.9°F (2018) | -9.0°F (2019) | 0.23 in (2012) |
| January 22 | 55.0°F (2017) | -11.9°F (2014) | 0.07 in (2023) |
| January 23 | 48.9°F (2018) | -14.1°F (2026) | 1.42 in (2018) |
| January 24 | 42.1°F (2012) | -16.1°F (2026) | 0.23 in (2024) |
| January 25 | 42.1°F (2012) | -15.0°F (2026) | 0.47 in (2020) |
| January 26 | 37.9°F (2024) | -20.9°F (2019) | 0.28 in (2024) |
| January 27 | 46.0°F (2018) | -16.1°F (2022) | 0.17 in (2021) |
| January 28 | 44.1°F (2018) | -16.1°F (2014) | 0.47 in (2019) |
| January 29 | 45.0°F (2025) | -17.0°F (2014) | 0.80 in (2013) |
| January 30 | 59.0°F (2013) | -23.1°F (2019) | 1.42 in (2013) |
| January 31 | 52.0°F (2025) | -26.0°F (2019) | 0.55 in (2021) |