December weather in Port Jefferson, OH
The average temperature in Port Jefferson in December is 31.7°F (23.9°F–39.6°F). Average precipitation: 2.92 inches.
December is a winter month in Port Jefferson, and is cooler than the annual average of 50.9°F. Daily temperatures swing about 15.7°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 8m. For travel, December is cold.
Avg High
39.6°F
Avg Low
23.9°F
Precipitation
2.92 in
Daylight
9h 8m
December records in Port Jefferson
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.9°F (1998) | 16.0°F (1999) | 2.67 in (2006) |
| December 2 | 62.1°F (1982) | 10.9°F (2002) | 0.92 in (2018) |
| December 3 | 71.1°F (1982) | 10.0°F (1979) | 2.86 in (1967) |
| December 4 | 71.1°F (1982) | 7.0°F (1991) | 1.01 in (1978) |
| December 5 | 64.0°F (1998) | 5.0°F (2025) | 1.15 in (1961) |
| December 6 | 66.9°F (2001) | 1.0°F (2007) | 1.34 in (1972) |
| December 7 | 71.1°F (1998) | 0.0°F (2007) | 1.35 in (1951) |
| December 8 | 57.9°F (1980) | 6.1°F (1984) | 0.55 in (2012) |
| December 9 | 61.0°F (1980) | 3.0°F (1995) | 1.31 in (1956) |
| December 10 | 59.0°F (2023) | -0.9°F (1995) | 1.17 in (1966) |
| December 11 | 64.0°F (2021) | -0.9°F (1995) | 1.46 in (1985) |
| December 12 | 63.0°F (2007) | -0.9°F (1988) | 1.10 in (2000) |
| December 13 | 69.1°F (2015) | 1.0°F (1988) | 0.79 in (1996) |
| December 14 | 62.1°F (2015) | 1.0°F (1985) | 1.02 in (1977) |
| December 15 | 64.9°F (1984) | -2.0°F (2025) | 1.37 in (1990) |
| December 16 | 62.1°F (2021) | -6.0°F (1989) | 0.84 in (1982) |
| December 17 | 64.0°F (1984) | -13.0°F (1989) | 1.65 in (1996) |
| December 18 | 64.9°F (1984) | -9.0°F (1989) | 1.20 in (1957) |
| December 19 | 54.0°F (2025) | -6.0°F (1989) | 1.00 in (2008) |
| December 20 | 55.0°F (1997) | -8.0°F (1981) | 0.66 in (1995) |
| December 21 | 57.9°F (1978) | -8.0°F (1989) | 1.62 in (2013) |
| December 22 | 61.0°F (2013) | -22.0°F (1989) | 2.99 in (2013) |
| December 23 | 59.0°F (2013) | -20.9°F (1989) | 1.48 in (1981) |
| December 24 | 63.0°F (2015) | -20.0°F (2004) | 1.18 in (1996) |
| December 25 | 61.0°F (1979) | -18.9°F (1983) | 0.83 in (2008) |
| December 26 | 64.0°F (1982) | -14.1°F (1983) | 0.85 in (1957) |
| December 27 | 64.9°F (2016) | -6.0°F (2017) | 2.18 in (2015) |
| December 28 | 64.9°F (2008) | -6.0°F (2017) | 1.16 in (1988) |
| December 29 | 66.9°F (2025) | -7.1°F (2000) | 1.33 in (2024) |
| December 30 | 62.1°F (1984) | -11.9°F (1983) | 2.83 in (1990) |
| December 31 | 59.0°F (2022) | -11.0°F (1983) | 0.55 in (2002) |