January weather in Mount Vernon, SD
The average temperature in Mount Vernon in January is 19.0°F (9.3°F–28.6°F). Average precipitation: 0.40 inches.
January is a winter month in Mount Vernon, and is cooler than the annual average of 47.7°F. Daily temperatures swing about 19.3°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 9h 5m. For travel, January is cold.
Avg High
28.6°F
Avg Low
9.3°F
Precipitation
0.40 in
Daylight
9h 5m
January records in Mount Vernon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 50.0°F (2004) | -22.9°F (2018) | 0.04 in (2014) |
| January 2 | 55.0°F (2004) | -22.9°F (2010) | 0.39 in (2023) |
| January 3 | 50.0°F (2003) | -5.8°F (2010) | 1.11 in (2023) |
| January 4 | 57.9°F (2012) | -10.8°F (2010) | 0.01 in (2003) |
| January 5 | 68.0°F (2012) | -12.8°F (2014) | 0.31 in (2015) |
| January 6 | 50.0°F (2012) | -15.0°F (2005) | 0.05 in (2024) |
| January 7 | 60.1°F (2003) | -10.8°F (2010) | 0.02 in (2016) |
| January 8 | 60.1°F (2003) | -20.7°F (2010) | 0.36 in (2024) |
| January 9 | 55.9°F (2012) | -21.8°F (2010) | 0.04 in (2017) |
| January 10 | 57.9°F (2012) | -11.7°F (2016) | 0.06 in (2018) |
| January 11 | 53.1°F (2022) | -10.8°F (2020) | 0.04 in (2012) |
| January 12 | 55.9°F (2026) | -8.9°F (2015) | 0.02 in (2005) |
| January 13 | 53.1°F (2026) | -15.9°F (2024) | 0.49 in (2002) |
| January 14 | 48.9°F (2000) | -18.8°F (2009) | 0.13 in (2001) |
| January 15 | 55.9°F (2006) | -24.9°F (2009) | 0.04 in (2001) |
| January 16 | 45.0°F (2004) | -16.1°F (2005) | 0.16 in (2012) |
| January 17 | 48.9°F (2022) | -16.8°F (2016) | 0.77 in (2020) |
| January 18 | 53.1°F (2022) | -13.9°F (2016) | 0.49 in (2019) |
| January 19 | 53.1°F (2014) | -15.9°F (2011) | 0.50 in (2000) |
| January 20 | 50.0°F (2021) | -17.9°F (2024) | 0.24 in (2012) |
| January 21 | 52.0°F (2002) | -13.9°F (2025) | 0.06 in (2022) |
| January 22 | 50.0°F (2002) | -11.0°F (2003) | 0.07 in (2012) |
| January 23 | 51.1°F (2004) | -17.0°F (2026) | 0.13 in (2021) |
| January 24 | 54.0°F (2005) | -21.8°F (2008) | 0.43 in (2017) |
| January 25 | 57.9°F (2002) | -14.1°F (2026) | 0.20 in (2017) |
| January 26 | 63.0°F (2006) | -13.0°F (2026) | 0.03 in (2023) |
| January 27 | 55.9°F (2006) | -18.9°F (2004) | 0.03 in (2012) |
| January 28 | 55.0°F (2025) | -9.9°F (2004) | 0.14 in (2023) |
| January 29 | 51.1°F (2022) | -20.7°F (2019) | 0.16 in (2001) |
| January 30 | 55.9°F (2012) | -21.8°F (2019) | 0.11 in (2014) |
| January 31 | 57.0°F (2009) | -8.9°F (2023) | 0.13 in (2015) |