December weather in Dexter, NY
The average temperature in Dexter in December is 27.3°F (19.0°F–35.5°F). Average precipitation: 3.14 inches.
December is a winter month in Dexter, and is cooler than the annual average of 45.3°F. Daily temperatures swing about 16.5°F between overnight low and afternoon high. Expect about 16 days with precipitation. Daylight averages about 8h 43m. For travel, December is cold.
Avg High
35.5°F
Avg Low
19.0°F
Precipitation
3.14 in
Daylight
8h 43m
December records in Dexter
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.0°F (1998) | -11.0°F (1989) | 1.81 in (2010) |
| December 2 | 60.1°F (1982) | -11.0°F (1976) | 0.64 in (2010) |
| December 3 | 66.9°F (1982) | -20.9°F (1976) | 0.81 in (2007) |
| December 4 | 69.1°F (2012) | -20.0°F (1989) | 1.16 in (1968) |
| December 5 | 66.9°F (1982) | -15.0°F (1989) | 1.14 in (1994) |
| December 6 | 68.0°F (1998) | -4.0°F (1969) | 0.89 in (2021) |
| December 7 | 68.0°F (1998) | -16.1°F (2000) | 1.53 in (1959) |
| December 8 | 63.0°F (1966) | -18.0°F (2025) | 0.78 in (1974) |
| December 9 | 63.0°F (1966) | -16.1°F (2025) | 1.17 in (1975) |
| December 10 | 57.0°F (1952) | -15.0°F (1968) | 2.26 in (1995) |
| December 11 | 60.1°F (1979) | -25.1°F (1977) | 1.40 in (1952) |
| December 12 | 60.1°F (1979) | -18.9°F (1988) | 0.99 in (1959) |
| December 13 | 55.9°F (1991) | -22.0°F (2005) | 0.88 in (1996) |
| December 14 | 66.9°F (2015) | -20.0°F (1989) | 0.89 in (2019) |
| December 15 | 60.1°F (1975) | -13.0°F (1962) | 1.00 in (2011) |
| December 16 | 63.0°F (2021) | -20.0°F (1963) | 1.00 in (1974) |
| December 17 | 57.9°F (2000) | -21.8°F (2013) | 1.34 in (1970) |
| December 18 | 53.1°F (2025) | -16.1°F (1973) | 1.62 in (1983) |
| December 19 | 55.9°F (1957) | -20.9°F (1983) | 0.77 in (2025) |
| December 20 | 62.1°F (1957) | -24.0°F (1963) | 1.18 in (1973) |
| December 21 | 61.0°F (2018) | -29.0°F (1955) | 0.97 in (2018) |
| December 22 | 64.0°F (1949) | -29.0°F (1989) | 0.91 in (1951) |
| December 23 | 63.0°F (2015) | -20.9°F (1989) | 1.28 in (2022) |
| December 24 | 66.9°F (2015) | -17.0°F (1989) | 1.10 in (2020) |
| December 25 | 62.1°F (1982) | -36.9°F (1980) | 1.10 in (2022) |
| December 26 | 60.1°F (1982) | -20.9°F (1989) | 0.82 in (1975) |
| December 27 | 59.0°F (2008) | -36.9°F (1989) | 1.06 in (2012) |
| December 28 | 60.1°F (1982) | -31.9°F (2017) | 1.84 in (1968) |
| December 29 | 60.1°F (2024) | -16.8°F (2017) | 0.76 in (1959) |
| December 30 | 60.1°F (2024) | -33.0°F (1963) | 1.09 in (2001) |
| December 31 | 60.1°F (1965) | -28.8°F (2017) | 0.57 in (2004) |