December weather in Rochester, NY
The average temperature in Rochester in December is 32.0°F (25.4°F–38.5°F). Average precipitation: 2.67 inches. Average snowfall is 22.3 inches.
December is a winter month in Rochester, and is cooler than the annual average of 49.5°F. Daily temperatures swing about 13.1°F between overnight low and afternoon high. Expect about 18 days with precipitation. Daylight averages about 8h 49m. For travel, December is cold.
Avg High
38.5°F
Avg Low
25.4°F
Precipitation
2.67 in
Snow
22.3 in
December records in Rochester
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.0°F (1934) | 5.0°F (1963) | 1.43 in (2010) |
| December 2 | 64.9°F (1982) | 1.9°F (1976) | 1.46 in (1986) |
| December 3 | 72.0°F (1982) | -2.9°F (1940) | 0.64 in (1991) |
| December 4 | 70.0°F (2012) | -2.9°F (1940) | 0.72 in (1970) |
| December 5 | 68.0°F (1982) | 3.0°F (1926) | 0.95 in (1977) |
| December 6 | 68.0°F (1998) | 8.1°F (1940) | 0.81 in (1945) |
| December 7 | 69.1°F (1998) | 3.9°F (1926) | 1.13 in (1959) |
| December 8 | 68.0°F (1966) | 3.9°F (1977) | 1.31 in (1944) |
| December 9 | 63.0°F (1966) | 1.9°F (2002) | 1.19 in (1975) |
| December 10 | 57.9°F (1946) | -0.9°F (1977) | 1.00 in (1969) |
| December 11 | 64.0°F (2021) | -6.0°F (1977) | 0.74 in (1992) |
| December 12 | 60.1°F (1979) | -8.0°F (1988) | 1.36 in (1944) |
| December 13 | 59.0°F (1927) | 1.0°F (1976) | 1.03 in (1935) |
| December 14 | 69.1°F (2015) | -4.0°F (1989) | 0.79 in (1999) |
| December 15 | 60.1°F (1975) | -4.0°F (1943) | 0.53 in (1947) |
| December 16 | 64.9°F (2021) | -0.9°F (1942) | 0.96 in (1927) |
| December 17 | 60.1°F (1984) | -3.8°F (2013) | 0.82 in (1929) |
| December 18 | 55.0°F (2025) | 0.0°F (1973) | 0.62 in (1977) |
| December 19 | 60.1°F (1957) | -2.9°F (1942) | 0.47 in (2008) |
| December 20 | 63.0°F (1957) | -16.1°F (1942) | 1.12 in (1936) |
| December 21 | 57.0°F (2018) | -2.9°F (1944) | 0.71 in (2013) |
| December 22 | 69.1°F (1949) | -0.9°F (1989) | 0.84 in (1931) |
| December 23 | 64.0°F (2015) | -2.0°F (1945) | 0.70 in (2022) |
| December 24 | 68.0°F (2015) | -7.1°F (1960) | 1.00 in (1941) |
| December 25 | 66.0°F (1982) | -11.9°F (1980) | 1.49 in (1978) |
| December 26 | 66.0°F (1982) | 1.9°F (1983) | 0.67 in (2012) |
| December 27 | 62.1°F (1936) | -2.0°F (1993) | 0.78 in (1942) |
| December 28 | 68.0°F (1982) | -0.9°F (1933) | 0.84 in (1968) |
| December 29 | 63.0°F (1984) | -7.1°F (1933) | 1.07 in (1991) |
| December 30 | 62.1°F (2022) | -6.0°F (1933) | 1.08 in (1990) |
| December 31 | 64.0°F (1972) | -5.1°F (1963) | 0.52 in (1996) |