December weather in Spencer, WI
The average temperature in Spencer in December is 20.6°F (13.5°F–27.8°F). Average precipitation: 0.90 inches.
December is a winter month in Spencer, and is cooler than the annual average of 43.7°F. Daily temperatures swing about 14.3°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 8h 37m. For travel, December is cold.
Avg High
27.8°F
Avg Low
13.5°F
Precipitation
0.90 in
Daylight
8h 37m
December records in Spencer
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 57.9°F (1998) | -1.8°F (2014) | 0.57 in (2019) |
| December 2 | 60.1°F (1998) | 0.1°F (2014) | 0.12 in (2015) |
| December 3 | 57.9°F (1998) | -0.9°F (2025) | 0.59 in (2011) |
| December 4 | 59.0°F (2001) | -11.9°F (2025) | 0.26 in (2016) |
| December 5 | 62.1°F (2001) | -6.9°F (2007) | 0.34 in (2001) |
| December 6 | 44.1°F (1998) | -9.9°F (2005) | 0.04 in (2004) |
| December 7 | 51.1°F (2024) | -8.9°F (2008) | 0.05 in (2021) |
| December 8 | 51.1°F (2023) | -9.8°F (2007) | 0.11 in (2014) |
| December 9 | 48.0°F (2020) | -8.9°F (2013) | 0.48 in (2025) |
| December 10 | 53.1°F (2015) | -11.9°F (2000) | 0.58 in (2021) |
| December 11 | 46.9°F (1998) | -10.8°F (2013) | 0.22 in (2016) |
| December 12 | 55.9°F (2006) | -11.0°F (2000) | 0.28 in (2006) |
| December 13 | 51.1°F (2015) | -13.0°F (2000) | 0.59 in (2015) |
| December 14 | 50.0°F (1998) | -15.0°F (2025) | 1.04 in (2015) |
| December 15 | 59.0°F (2021) | -12.8°F (2013) | 0.47 in (2012) |
| December 16 | 54.0°F (2021) | -11.7°F (2008) | 0.27 in (2016) |
| December 17 | 42.1°F (1997) | -6.9°F (2008) | 0.20 in (2016) |
| December 18 | 48.9°F (2002) | -17.9°F (2016) | 0.25 in (2002) |
| December 19 | 41.0°F (2006) | -14.8°F (2016) | 0.04 in (2008) |
| December 20 | 44.1°F (2015) | -9.9°F (1996) | 0.56 in (2012) |
| December 21 | 39.9°F (2003) | -12.8°F (2008) | 0.26 in (2006) |
| December 22 | 43.0°F (2019) | -12.8°F (2022) | 0.41 in (2006) |
| December 23 | 48.0°F (2020) | -13.9°F (2022) | 0.55 in (2015) |
| December 24 | 48.9°F (2023) | -22.0°F (2004) | 0.25 in (2009) |
| December 25 | 50.0°F (2023) | -15.0°F (1996) | 0.36 in (2016) |
| December 26 | 48.0°F (2023) | -15.9°F (2017) | 0.36 in (2016) |
| December 27 | 44.1°F (2008) | -18.8°F (2017) | 0.90 in (2018) |
| December 28 | 48.0°F (2024) | -9.8°F (2017) | 0.45 in (2015) |
| December 29 | 44.1°F (1999) | -17.9°F (2013) | 0.42 in (2019) |
| December 30 | 46.9°F (2004) | -22.9°F (2013) | 0.30 in (2019) |
| December 31 | 46.0°F (2004) | -15.9°F (2013) | 0.30 in (2006) |