December weather in Portage, MI
The average temperature in Portage in December is 30.4°F (24.2°F–36.5°F). Average precipitation: 1.68 inches.
December is a winter month in Portage, and is cooler than the annual average of 49.5°F. Daily temperatures swing about 12.3°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 8h 56m. For travel, December is cold.
Avg High
36.5°F
Avg Low
24.2°F
Precipitation
1.68 in
Daylight
8h 56m
December records in Portage
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 59.0°F (2012) | 15.3°F (2007) | 0.73 in (2023) |
| December 2 | 60.1°F (1998) | 7.0°F (2002) | 0.39 in (2007) |
| December 3 | 64.9°F (1998) | -2.9°F (2002) | 0.27 in (1999) |
| December 4 | 64.0°F (1998) | 0.0°F (2002) | 0.35 in (2011) |
| December 5 | 69.1°F (2001) | 3.0°F (2025) | 0.91 in (1999) |
| December 6 | 64.9°F (1998) | 10.9°F (2000) | 1.05 in (1998) |
| December 7 | 57.9°F (2004) | 6.1°F (2005) | 0.55 in (2004) |
| December 8 | 55.9°F (2023) | 0.0°F (2025) | 0.33 in (2005) |
| December 9 | 59.0°F (2023) | 0.0°F (2002) | 0.54 in (2019) |
| December 10 | 57.0°F (2015) | 4.1°F (2013) | 0.54 in (2004) |
| December 11 | 59.0°F (2021) | 10.2°F (2019) | 0.56 in (2021) |
| December 12 | 63.0°F (2015) | 1.0°F (2000) | 1.10 in (2020) |
| December 13 | 63.0°F (2015) | -4.0°F (2000) | 0.32 in (2000) |
| December 14 | 62.1°F (2015) | 1.9°F (2025) | 0.83 in (2011) |
| December 15 | 63.0°F (2021) | 6.3°F (2016) | 0.42 in (2022) |
| December 16 | 111.0°F (2001) | 5.2°F (2013) | 0.22 in (1999) |
| December 17 | 55.9°F (2006) | 3.9°F (2000) | 0.17 in (2001) |
| December 18 | 51.1°F (2025) | 8.1°F (1999) | 0.63 in (2002) |
| December 19 | 51.1°F (2002) | -0.8°F (2016) | 0.54 in (2008) |
| December 20 | 48.0°F (2012) | 3.0°F (2000) | 0.76 in (2012) |
| December 21 | 51.1°F (2015) | -2.9°F (2000) | 0.66 in (2015) |
| December 22 | 54.0°F (2006) | -8.0°F (2000) | 0.37 in (2006) |
| December 23 | 62.1°F (2015) | -0.9°F (2000) | 0.57 in (2015) |
| December 24 | 57.9°F (2015) | -0.9°F (2004) | 0.62 in (2014) |
| December 25 | 59.0°F (2023) | 3.0°F (2004) | 0.47 in (2009) |
| December 26 | 61.0°F (2019) | -1.8°F (2017) | 0.23 in (2025) |
| December 27 | 62.1°F (2008) | -5.8°F (2017) | 0.40 in (2021) |
| December 28 | 60.1°F (2025) | -9.0°F (2000) | 1.69 in (2025) |
| December 29 | 57.0°F (2019) | 1.9°F (2000) | 1.15 in (2024) |
| December 30 | 55.9°F (2022) | -7.8°F (2017) | 0.64 in (2019) |
| December 31 | 60.1°F (2004) | -10.8°F (2017) | 0.86 in (2018) |