December weather in Watertown Town, MA
The average temperature in Watertown Town in December is 34.0°F (25.7°F–42.4°F). Average precipitation: 5.08 inches.
December is a winter month in Watertown Town, and is cooler than the annual average of 51.2°F. Daily temperatures swing about 16.7°F between overnight low and afternoon high. Daylight averages about 8h 55m. For travel, December is a wet month.
Avg High
42.4°F
Avg Low
25.7°F
Precipitation
5.08 in
Daylight
8h 55m
December records in Watertown Town
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 69.1°F (2006) | 9.0°F (1976) | 1.95 in (2020) |
| December 2 | 73.0°F (2001) | 8.1°F (1989) | 1.46 in (1981) |
| December 3 | 66.0°F (1998) | 5.0°F (1976) | 2.15 in (1986) |
| December 4 | 69.1°F (2009) | 3.9°F (1976) | 1.52 in (1967) |
| December 5 | 71.1°F (1998) | 9.0°F (1976) | 2.01 in (1968) |
| December 6 | 71.1°F (2001) | 8.1°F (1976) | 1.96 in (1962) |
| December 7 | 73.0°F (2001) | 10.9°F (1964) | 1.58 in (2003) |
| December 8 | 78.1°F (1998) | 3.9°F (1964) | 2.64 in (2011) |
| December 9 | 63.0°F (1966) | 9.0°F (1976) | 1.50 in (1969) |
| December 10 | 70.0°F (1966) | 5.0°F (1968) | 3.68 in (2014) |
| December 11 | 62.1°F (2008) | 3.9°F (1977) | 2.75 in (2023) |
| December 12 | 64.9°F (2021) | 1.9°F (1988) | 3.80 in (2008) |
| December 13 | 63.0°F (2015) | 5.0°F (1977) | 2.01 in (2010) |
| December 14 | 62.1°F (2015) | 0.0°F (1976) | 1.10 in (1983) |
| December 15 | 60.1°F (2015) | 6.1°F (1962) | 1.70 in (1968) |
| December 16 | 64.9°F (1975) | 3.9°F (2016) | 1.16 in (1972) |
| December 17 | 64.0°F (2000) | 1.9°F (1963) | 1.70 in (2022) |
| December 18 | 66.0°F (2000) | -0.9°F (1988) | 2.32 in (2000) |
| December 19 | 64.0°F (2023) | 3.0°F (1979) | 2.92 in (1986) |
| December 20 | 57.0°F (1967) | 0.0°F (1980) | 1.12 in (2008) |
| December 21 | 61.0°F (2002) | 1.9°F (1962) | 1.60 in (1977) |
| December 22 | 64.0°F (2018) | 0.0°F (1980) | 1.48 in (1993) |
| December 23 | 64.9°F (1994) | 3.0°F (1989) | 1.44 in (2022) |
| December 24 | 64.9°F (1990) | 1.0°F (1975) | 1.42 in (1994) |
| December 25 | 69.1°F (2015) | -6.0°F (1980) | 1.35 in (1994) |
| December 26 | 66.9°F (2015) | -9.9°F (1980) | 1.30 in (2002) |
| December 27 | 60.1°F (1973) | -4.0°F (1968) | 4.52 in (1969) |
| December 28 | 57.0°F (2011) | 3.9°F (2017) | 1.87 in (1964) |
| December 29 | 66.9°F (1984) | 1.0°F (2017) | 2.43 in (1967) |
| December 30 | 72.0°F (1984) | 1.0°F (1987) | 1.34 in (2013) |
| December 31 | 64.9°F (2022) | -5.1°F (1962) | 1.38 in (2019) |