December weather in Riverton, MN
The average temperature in Riverton in December is 16.8°F (7.6°F–26.0°F). Average precipitation: 0.55 inches.
December is a winter month in Riverton, and is cooler than the annual average of 42.2°F. Daily temperatures swing about 18.4°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 8h 24m. For travel, December is cold.
Avg High
26.0°F
Avg Low
7.6°F
Precipitation
0.55 in
Daylight
8h 24m
December records in Riverton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 53.1°F (1998) | -8.9°F (2014) | 0.16 in (2015) |
| December 2 | 54.0°F (1998) | -7.1°F (2000) | 0.18 in (2003) |
| December 3 | 54.0°F (1998) | -9.8°F (2007) | 0.01 in (2021) |
| December 4 | 46.0°F (2017) | -11.0°F (2025) | 0.21 in (2017) |
| December 5 | 45.0°F (2001) | -18.8°F (2007) | 0.57 in (1998) |
| December 6 | 41.0°F (2012) | -17.9°F (2007) | 0.08 in (2022) |
| December 7 | 48.0°F (2023) | -22.9°F (2013) | 0.00 in (1998) |
| December 8 | 43.0°F (1999) | -22.9°F (2013) | 0.27 in (2019) |
| December 9 | 48.9°F (2020) | -19.8°F (2007) | 0.16 in (2023) |
| December 10 | 45.0°F (2002) | -16.1°F (2000) | 0.42 in (2015) |
| December 11 | 46.9°F (2011) | -20.7°F (2013) | 0.20 in (2019) |
| December 12 | 48.9°F (1998) | -24.0°F (2000) | 0.01 in (2019) |
| December 13 | 46.0°F (1998) | -18.0°F (2025) | 0.87 in (2022) |
| December 14 | 52.0°F (1998) | -26.0°F (2025) | 0.43 in (2022) |
| December 15 | 48.0°F (2018) | -22.9°F (2019) | 0.97 in (2021) |
| December 16 | 48.9°F (2025) | -24.9°F (2008) | 0.27 in (2015) |
| December 17 | 42.1°F (2001) | -17.9°F (2008) | 0.03 in (1998) |
| December 18 | 46.9°F (2011) | -27.8°F (2016) | 0.09 in (2024) |
| December 19 | 44.1°F (2006) | -16.1°F (1996) | 0.11 in (2024) |
| December 20 | 39.9°F (2006) | -18.9°F (1996) | 0.06 in (2017) |
| December 21 | 43.0°F (2003) | -19.8°F (2022) | 0.49 in (2007) |
| December 22 | 41.0°F (2005) | -22.9°F (2008) | 0.12 in (2007) |
| December 23 | 44.1°F (2023) | -27.8°F (2013) | 0.59 in (2023) |
| December 24 | 48.9°F (2023) | -29.7°F (2013) | 1.18 in (2023) |
| December 25 | 43.0°F (1999) | -27.9°F (1996) | 0.77 in (2023) |
| December 26 | 46.9°F (2011) | -29.9°F (1996) | 0.39 in (2018) |
| December 27 | 43.0°F (2003) | -29.7°F (2017) | 0.71 in (2018) |
| December 28 | 45.0°F (2024) | -14.8°F (2020) | 1.14 in (2019) |
| December 29 | 46.9°F (1999) | -23.8°F (2018) | 0.20 in (2019) |
| December 30 | 42.1°F (2004) | -26.9°F (2013) | 0.63 in (2010) |
| December 31 | 39.9°F (2006) | -27.8°F (2017) | 0.21 in (2006) |