December weather in Ottumwa, IA
The average temperature in Ottumwa in December is 28.4°F (19.7°F–37.2°F). Average precipitation: 1.44 inches. Average snowfall is 4.2 inches.
December is a winter month in Ottumwa, and is cooler than the annual average of 50.7°F. Daily temperatures swing about 17.5°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 4m. For travel, December is cold.
Avg High
37.2°F
Avg Low
19.7°F
Precipitation
1.44 in
Snow
4.2 in
December records in Ottumwa
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.9°F (1970) | 1.9°F (2005) | 0.89 in (1985) |
| December 2 | 66.9°F (1973) | 0.0°F (1985) | 0.75 in (1982) |
| December 3 | 71.1°F (2012) | -2.9°F (1985) | 1.09 in (2011) |
| December 4 | 71.1°F (1998) | -7.1°F (2025) | 1.07 in (1973) |
| December 5 | 68.0°F (2001) | -5.1°F (2005) | 1.31 in (1982) |
| December 6 | 64.9°F (1951) | -6.0°F (2005) | 0.66 in (1994) |
| December 7 | 61.0°F (2023) | -9.9°F (1976) | 1.90 in (1980) |
| December 8 | 61.0°F (1991) | -9.0°F (1958) | 0.67 in (2009) |
| December 9 | 57.0°F (1993) | -11.0°F (1958) | 1.86 in (2003) |
| December 10 | 63.0°F (2020) | -6.0°F (1972) | 1.36 in (1970) |
| December 11 | 68.0°F (1949) | -11.0°F (1972) | 1.32 in (2007) |
| December 12 | 62.1°F (1991) | -11.0°F (2000) | 0.56 in (2001) |
| December 13 | 63.0°F (2015) | -11.0°F (1961) | 1.54 in (2015) |
| December 14 | 61.0°F (2008) | -9.9°F (1985) | 1.87 in (2024) |
| December 15 | 75.0°F (2021) | -13.0°F (1989) | 0.81 in (1971) |
| December 16 | 62.1°F (2006) | -13.0°F (1951) | 0.32 in (1970) |
| December 17 | 54.0°F (1962) | -6.0°F (1964) | 0.26 in (1990) |
| December 18 | 64.0°F (2002) | -15.0°F (1983) | 0.47 in (1957) |
| December 19 | 57.0°F (1988) | -18.0°F (1983) | 1.12 in (1952) |
| December 20 | 57.0°F (1967) | -13.0°F (1983) | 1.01 in (2006) |
| December 21 | 57.0°F (1967) | -18.9°F (1989) | 0.60 in (2015) |
| December 22 | 59.0°F (1957) | -20.0°F (1989) | 0.77 in (2023) |
| December 23 | 60.1°F (1965) | -20.9°F (1989) | 0.48 in (1965) |
| December 24 | 63.0°F (2021) | -18.9°F (1983) | 1.02 in (1965) |
| December 25 | 63.0°F (2019) | -15.0°F (1983) | 0.63 in (2016) |
| December 26 | 55.0°F (1959) | -13.0°F (1962) | 0.44 in (1984) |
| December 27 | 57.0°F (1984) | -10.8°F (2017) | 1.00 in (2003) |
| December 28 | 69.1°F (1984) | -9.9°F (1961) | 1.28 in (2015) |
| December 29 | 66.9°F (1984) | -7.1°F (1983) | 0.97 in (2020) |
| December 30 | 64.0°F (1965) | -9.9°F (1968) | 0.38 in (1998) |
| December 31 | 63.0°F (1965) | -15.9°F (2017) | 0.70 in (1949) |