December weather in Westwood, IA
The average temperature in Westwood in December is 27.5°F (18.4°F–36.6°F). Average precipitation: 1.68 inches. Average snowfall is 6.1 inches.
December is a winter month in Westwood, and is cooler than the annual average of 49.7°F. Daily temperatures swing about 18.2°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 9h 4m. For travel, December is cold.
Avg High
36.6°F
Avg Low
18.4°F
Precipitation
1.68 in
Snow
6.1 in
December records in Westwood
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.9°F (1982) | 6.1°F (1985) | 0.72 in (1945) |
| December 2 | 64.9°F (1962) | -2.0°F (1929) | 1.33 in (1982) |
| December 3 | 69.1°F (1970) | -5.1°F (1940) | 0.75 in (1978) |
| December 4 | 72.0°F (1998) | -0.9°F (2025) | 1.43 in (1924) |
| December 5 | 68.0°F (2001) | -0.9°F (2005) | 1.33 in (1982) |
| December 6 | 64.9°F (1951) | -5.1°F (1917) | 0.70 in (2004) |
| December 7 | 64.9°F (1916) | -11.0°F (1976) | 0.97 in (1994) |
| December 8 | 66.0°F (1946) | -11.9°F (1917) | 1.80 in (1980) |
| December 9 | 64.9°F (1918) | -13.0°F (1958) | 0.93 in (2023) |
| December 10 | 60.1°F (1979) | -16.1°F (1919) | 2.00 in (2003) |
| December 11 | 68.0°F (1949) | -16.1°F (1972) | 1.51 in (1949) |
| December 12 | 66.9°F (1991) | -14.1°F (1989) | 0.97 in (1946) |
| December 13 | 63.0°F (1975) | -14.1°F (1903) | 0.50 in (2001) |
| December 14 | 61.0°F (1975) | -15.0°F (1901) | 2.00 in (2011) |
| December 15 | 60.1°F (2021) | -17.0°F (1989) | 2.30 in (1971) |
| December 16 | 73.9°F (2021) | -15.0°F (1932) | 1.20 in (1992) |
| December 17 | 59.0°F (1939) | -8.0°F (1914) | 0.55 in (1896) |
| December 18 | 66.0°F (1939) | -16.1°F (1985) | 0.90 in (1957) |
| December 19 | 59.0°F (1939) | -20.9°F (1985) | 1.50 in (2002) |
| December 20 | 59.0°F (1941) | -18.0°F (1989) | 1.30 in (1987) |
| December 21 | 59.0°F (1941) | -20.0°F (1989) | 0.94 in (1949) |
| December 22 | 64.9°F (1933) | -20.0°F (1989) | 0.50 in (1942) |
| December 23 | 66.0°F (1933) | -25.1°F (1989) | 1.12 in (1979) |
| December 24 | 61.0°F (2015) | -20.0°F (1983) | 1.68 in (1982) |
| December 25 | 66.0°F (2021) | -17.0°F (2013) | 0.80 in (1957) |
| December 26 | 63.0°F (2019) | -20.9°F (1914) | 2.52 in (1942) |
| December 27 | 66.9°F (1946) | -11.9°F (2017) | 1.83 in (1904) |
| December 28 | 69.1°F (1984) | -20.0°F (1924) | 0.80 in (1910) |
| December 29 | 66.9°F (1984) | -17.0°F (1917) | 1.05 in (2015) |
| December 30 | 63.0°F (1929) | -13.0°F (1909) | 1.66 in (1906) |
| December 31 | 62.1°F (1965) | -14.1°F (1968) | 0.98 in (1931) |