December weather in Norwalk, WI
The average temperature in Norwalk in December is 22.9°F (14.7°F–31.1°F). Average precipitation: 1.50 inches.
December is a winter month in Norwalk, and is cooler than the annual average of 45°F. Daily temperatures swing about 16.4°F between overnight low and afternoon high. Daylight averages about 8h 44m. For travel, December is cold.
Avg High
31.1°F
Avg Low
14.7°F
Precipitation
1.50 in
Daylight
8h 44m
December records in Norwalk
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 48.0°F (2017) | 1.9°F (2025) | 0.25 in (2015) |
| December 2 | 51.1°F (2021) | 3.9°F (2014) | 0.94 in (2018) |
| December 3 | 48.9°F (2017) | 10.0°F (2022) | 0.16 in (2018) |
| December 4 | 53.1°F (2017) | -9.9°F (2025) | 0.24 in (2016) |
| December 5 | 60.1°F (2017) | -8.0°F (2025) | 0.02 in (2024) |
| December 6 | 46.9°F (2015) | 6.1°F (2025) | 0.06 in (2025) |
| December 7 | 42.1°F (2015) | -0.9°F (2018) | 0.10 in (2025) |
| December 8 | 52.0°F (2023) | -8.0°F (2025) | 0.13 in (2014) |
| December 9 | 53.1°F (2024) | 3.9°F (2018) | 0.08 in (2017) |
| December 10 | 50.0°F (2020) | -2.0°F (2019) | 0.43 in (2022) |
| December 11 | 54.0°F (2015) | -2.0°F (2019) | 0.60 in (2016) |
| December 12 | 35.1°F (2020) | -6.0°F (2024) | 0.15 in (2016) |
| December 13 | 45.0°F (2015) | -7.1°F (2024) | 0.93 in (2015) |
| December 14 | 52.0°F (2015) | -14.1°F (2025) | 2.32 in (2015) |
| December 15 | 57.0°F (2021) | -14.1°F (2025) | 0.91 in (2022) |
| December 16 | 66.9°F (2021) | -5.1°F (2016) | 0.47 in (2021) |
| December 17 | 46.9°F (2015) | 10.9°F (2016) | 0.41 in (2016) |
| December 18 | 41.0°F (2025) | -7.1°F (2016) | 0.15 in (2016) |
| December 19 | 43.0°F (2018) | -9.9°F (2016) | 0.04 in (2015) |
| December 20 | 42.1°F (2017) | -5.1°F (2022) | 0.27 in (2024) |
| December 21 | 44.1°F (2015) | -11.9°F (2022) | 0.00 in (2014) |
| December 22 | 42.1°F (2019) | -9.0°F (2024) | 0.38 in (2022) |
| December 23 | 45.0°F (2019) | -14.1°F (2022) | 0.35 in (2014) |
| December 24 | 48.9°F (2020) | -13.0°F (2022) | 0.92 in (2015) |
| December 25 | 54.0°F (2023) | -5.1°F (2022) | 0.15 in (2023) |
| December 26 | 52.0°F (2023) | -5.1°F (2022) | 0.42 in (2023) |
| December 27 | 44.1°F (2024) | -7.1°F (2022) | 0.35 in (2018) |
| December 28 | 45.0°F (2018) | -2.9°F (2017) | 0.50 in (2024) |
| December 29 | 51.1°F (2019) | -2.0°F (2020) | 0.98 in (2015) |
| December 30 | 51.1°F (2019) | -2.0°F (2017) | 0.17 in (2020) |
| December 31 | 36.0°F (2024) | -2.0°F (2017) | 0.27 in (2019) |