December weather in Osage, IA
The average temperature in Osage in December is 21.4°F (13.6°F–29.2°F). Average precipitation: 1.51 inches. Average snowfall is 9.6 inches.
December is a winter month in Osage, and is cooler than the annual average of 45.3°F. Daily temperatures swing about 15.6°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 8h 48m. For travel, December is cold.
Avg High
29.2°F
Avg Low
13.6°F
Precipitation
1.51 in
Snow
9.6 in
December records in Osage
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 63.0°F (1998) | -4.0°F (1930) | 0.90 in (1981) |
| December 2 | 61.0°F (1998) | -7.1°F (1976) | 1.10 in (2007) |
| December 3 | 60.1°F (1962) | -17.0°F (1940) | 0.85 in (1990) |
| December 4 | 62.1°F (2012) | -13.0°F (2025) | 0.61 in (2011) |
| December 5 | 64.9°F (2017) | -14.1°F (2025) | 1.00 in (1948) |
| December 6 | 68.0°F (2001) | -14.1°F (1972) | 0.95 in (1982) |
| December 7 | 48.9°F (1939) | -17.0°F (1972) | 0.60 in (1950) |
| December 8 | 62.1°F (1946) | -14.1°F (1927) | 0.40 in (1914) |
| December 9 | 62.1°F (1946) | -20.9°F (1958) | 0.90 in (1997) |
| December 10 | 57.0°F (1979) | -17.0°F (1958) | 1.12 in (1911) |
| December 11 | 55.0°F (1946) | -14.1°F (2000) | 1.26 in (1899) |
| December 12 | 57.0°F (1968) | -16.1°F (1932) | 1.05 in (2010) |
| December 13 | 48.9°F (1913) | -20.9°F (1903) | 0.70 in (1991) |
| December 14 | 53.1°F (1998) | -24.0°F (1901) | 1.61 in (2015) |
| December 15 | 54.0°F (1939) | -20.0°F (1901) | 0.99 in (1894) |
| December 16 | 66.9°F (2021) | -20.0°F (1932) | 1.18 in (1908) |
| December 17 | 53.1°F (1939) | -20.0°F (1983) | 0.72 in (1895) |
| December 18 | 51.1°F (1941) | -25.1°F (1983) | 0.48 in (1990) |
| December 19 | 50.0°F (2002) | -25.1°F (1983) | 0.80 in (2008) |
| December 20 | 48.0°F (1933) | -25.1°F (1983) | 0.67 in (1988) |
| December 21 | 52.0°F (1941) | -23.1°F (1989) | 0.75 in (2006) |
| December 22 | 53.1°F (1941) | -20.9°F (1983) | 0.58 in (1942) |
| December 23 | 46.9°F (1936) | -24.0°F (1990) | 0.63 in (2014) |
| December 24 | 48.0°F (2020) | -18.0°F (1983) | 0.80 in (1932) |
| December 25 | 53.1°F (2023) | -20.0°F (1983) | 0.80 in (2009) |
| December 26 | 54.0°F (1936) | -25.1°F (1983) | 0.72 in (2023) |
| December 27 | 53.1°F (1936) | -29.9°F (1950) | 1.50 in (1904) |
| December 28 | 59.0°F (1984) | -18.0°F (1911) | 1.78 in (1982) |
| December 29 | 48.0°F (2002) | -18.9°F (1909) | 1.03 in (2019) |
| December 30 | 51.1°F (1965) | -20.0°F (1909) | 0.65 in (1936) |
| December 31 | 54.0°F (1965) | -20.0°F (1976) | 1.03 in (2006) |