December weather in Westfield, WI
The average temperature in Westfield in December is 23.3°F (15.1°F–31.5°F). Average precipitation: 1.66 inches. Average snowfall is 10.8 inches.
December is a winter month in Westfield, and is cooler than the annual average of 45.6°F. Daily temperatures swing about 16.4°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 8h 44m. For travel, December is cold.
Avg High
31.5°F
Avg Low
15.1°F
Precipitation
1.66 in
Snow
10.8 in
December records in Westfield
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 60.1°F (1970) | -9.0°F (1976) | 0.54 in (2019) |
| December 2 | 59.0°F (1962) | -9.0°F (1976) | 1.18 in (2018) |
| December 3 | 63.0°F (1998) | -18.0°F (1985) | 0.42 in (1978) |
| December 4 | 64.9°F (1998) | -7.1°F (1985) | 0.77 in (1973) |
| December 5 | 62.1°F (2001) | -4.0°F (2005) | 0.52 in (2001) |
| December 6 | 63.0°F (2001) | -11.0°F (2007) | 0.84 in (1982) |
| December 7 | 53.1°F (1988) | -14.1°F (1972) | 1.25 in (1967) |
| December 8 | 51.1°F (1991) | -9.9°F (1976) | 0.61 in (1963) |
| December 9 | 55.0°F (2023) | -11.0°F (1958) | 1.27 in (2009) |
| December 10 | 52.0°F (1979) | -14.1°F (1978) | 0.72 in (2003) |
| December 11 | 57.9°F (2015) | -16.1°F (1977) | 1.05 in (1965) |
| December 12 | 50.0°F (1987) | -11.9°F (1962) | 1.15 in (1965) |
| December 13 | 48.9°F (1998) | -16.1°F (1961) | 0.58 in (2015) |
| December 14 | 63.0°F (1975) | -16.1°F (1985) | 1.95 in (2015) |
| December 15 | 55.9°F (2015) | -16.1°F (2010) | 1.20 in (2022) |
| December 16 | 63.0°F (2021) | -16.1°F (2010) | 1.02 in (1992) |
| December 17 | 55.9°F (1984) | -14.1°F (1964) | 0.27 in (2016) |
| December 18 | 51.1°F (2015) | -25.1°F (1983) | 0.72 in (1957) |
| December 19 | 53.1°F (2002) | -34.1°F (1983) | 0.74 in (1968) |
| December 20 | 48.9°F (1967) | -32.1°F (1983) | 1.00 in (1977) |
| December 21 | 46.9°F (1967) | -25.1°F (1985) | 0.62 in (2012) |
| December 22 | 48.0°F (1957) | -20.9°F (1989) | 0.65 in (1959) |
| December 23 | 53.1°F (2019) | -25.1°F (1983) | 0.63 in (2014) |
| December 24 | 53.1°F (2015) | -29.9°F (1983) | 0.50 in (2009) |
| December 25 | 50.0°F (2023) | -24.0°F (2000) | 0.99 in (2009) |
| December 26 | 54.0°F (2023) | -22.0°F (1962) | 0.67 in (2016) |
| December 27 | 48.0°F (2014) | -17.0°F (1990) | 1.73 in (1959) |
| December 28 | 51.1°F (1984) | -20.0°F (2000) | 0.80 in (1968) |
| December 29 | 60.1°F (1984) | -20.0°F (2000) | 1.26 in (2015) |
| December 30 | 52.0°F (2019) | -22.0°F (1976) | 0.57 in (2019) |
| December 31 | 59.0°F (1965) | -20.0°F (1967) | 0.50 in (1978) |