December weather in Seymour, MO
The average temperature in Seymour in December is 35.6°F (24.4°F–46.7°F). Average precipitation: 3.05 inches.
December is a winter month in Seymour, and is cooler than the annual average of 54.9°F. Daily temperatures swing about 22.3°F between overnight low and afternoon high. Daylight averages about 9h 27m. For travel, December is cool.
Avg High
46.7°F
Avg Low
24.4°F
Precipitation
3.05 in
Daylight
9h 27m
December records in Seymour
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 62.1°F (2007) | 12.9°F (2020) | 0.76 in (2023) |
| December 2 | 69.1°F (2007) | 12.9°F (2020) | 0.14 in (2007) |
| December 3 | 57.9°F (2013) | 12.9°F (2006) | 0.24 in (2020) |
| December 4 | 60.1°F (2013) | 16.0°F (2009) | 0.94 in (2011) |
| December 5 | 66.0°F (2013) | 9.0°F (2009) | 0.28 in (2011) |
| December 6 | 61.0°F (2020) | 9.0°F (2009) | 1.45 in (2013) |
| December 7 | 55.0°F (2023) | 6.1°F (2013) | 0.14 in (2009) |
| December 8 | 66.9°F (2023) | 6.1°F (2013) | 0.14 in (2007) |
| December 9 | 61.0°F (2023) | 9.0°F (2016) | 1.55 in (2007) |
| December 10 | 72.0°F (2020) | 7.0°F (2009) | 0.66 in (2007) |
| December 11 | 72.0°F (2020) | 7.0°F (2009) | 0.58 in (2007) |
| December 12 | 57.9°F (2006) | 5.0°F (2013) | 0.70 in (2020) |
| December 13 | 66.0°F (2006) | 3.9°F (2013) | 0.83 in (2011) |
| December 14 | 68.0°F (2006) | 6.1°F (2010) | 0.92 in (2013) |
| December 15 | 69.1°F (2006) | 14.0°F (2008) | 0.96 in (2011) |
| December 16 | 70.0°F (2006) | 12.9°F (2009) | 0.18 in (2023) |
| December 17 | 72.0°F (2006) | 12.9°F (2009) | 0.02 in (2016) |
| December 18 | 59.0°F (2023) | 3.0°F (2016) | 0.69 in (2006) |
| December 19 | 59.0°F (2008) | 1.0°F (2016) | 0.12 in (2007) |
| December 20 | 57.0°F (2013) | 3.9°F (2016) | 0.95 in (2011) |
| December 21 | 63.0°F (2013) | 5.0°F (2008) | 1.07 in (2013) |
| December 22 | 61.0°F (2020) | 1.9°F (2008) | 0.45 in (2013) |
| December 23 | 60.1°F (2020) | 1.0°F (2008) | 0.23 in (2023) |
| December 24 | 64.0°F (2023) | 10.0°F (2013) | 0.66 in (2008) |
| December 25 | 59.0°F (2023) | 9.0°F (2013) | 1.32 in (2023) |
| December 26 | 64.0°F (2016) | 10.0°F (2020) | 0.95 in (2016) |
| December 27 | 66.0°F (2008) | 8.1°F (2010) | 0.52 in (2011) |
| December 28 | 66.9°F (2008) | 8.1°F (2010) | 3.73 in (2015) |
| December 29 | 61.0°F (2006) | 16.0°F (2010) | 0.42 in (2006) |
| December 30 | 64.0°F (2008) | 10.9°F (2012) | 0.62 in (2006) |
| December 31 | 68.0°F (2008) | 10.0°F (2013) | 0.15 in (2020) |