January weather in Port Jefferson, OH
The average temperature in Port Jefferson in January is 26.2°F (17.9°F–34.4°F). Average precipitation: 2.89 inches.
January is a winter month in Port Jefferson, and is cooler than the annual average of 50.9°F. Daily temperatures swing about 16.5°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 9h 26m. For travel, January is cold.
Avg High
34.4°F
Avg Low
17.9°F
Precipitation
2.89 in
Daylight
9h 26m
January records in Port Jefferson
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 62.1°F (2011) | -9.9°F (2018) | 0.92 in (1979) |
| January 2 | 60.1°F (1985) | -18.9°F (2018) | 1.07 in (2021) |
| January 3 | 59.0°F (2000) | -18.0°F (2018) | 0.87 in (2005) |
| January 4 | 62.1°F (2023) | -7.1°F (2014) | 2.36 in (1950) |
| January 5 | 64.0°F (1997) | -9.0°F (1999) | 2.07 in (2005) |
| January 6 | 59.0°F (1998) | -9.0°F (1999) | 0.96 in (1950) |
| January 7 | 57.9°F (1998) | -11.9°F (2014) | 0.98 in (1998) |
| January 8 | 64.9°F (2008) | -9.0°F (2014) | 1.66 in (1998) |
| January 9 | 61.0°F (2026) | -11.0°F (1981) | 2.19 in (2008) |
| January 10 | 61.0°F (2026) | -15.0°F (1982) | 0.67 in (2016) |
| January 11 | 59.0°F (2020) | -15.0°F (1982) | 2.91 in (2005) |
| January 12 | 64.0°F (2020) | -9.0°F (1979) | 0.87 in (2007) |
| January 13 | 63.0°F (1995) | -7.1°F (1997) | 1.32 in (2023) |
| January 14 | 63.0°F (1995) | -7.1°F (1997) | 1.21 in (1992) |
| January 15 | 63.0°F (1995) | -13.0°F (1982) | 1.78 in (1950) |
| January 16 | 50.0°F (2006) | -16.1°F (2009) | 0.33 in (1997) |
| January 17 | 55.0°F (1990) | -18.9°F (1982) | 0.84 in (2017) |
| January 18 | 57.0°F (1980) | -18.9°F (1982) | 1.32 in (1969) |
| January 19 | 66.0°F (1996) | -31.0°F (1994) | 0.85 in (1949) |
| January 20 | 60.1°F (2023) | -25.1°F (1994) | 0.92 in (2019) |
| January 21 | 55.0°F (2017) | -24.0°F (1985) | 2.23 in (1959) |
| January 22 | 59.0°F (2017) | -20.9°F (1984) | 1.49 in (1959) |
| January 23 | 64.0°F (2017) | -8.0°F (2005) | 0.93 in (1982) |
| January 24 | 60.1°F (1999) | -9.9°F (2000) | 1.28 in (1950) |
| January 25 | 54.0°F (1990) | -11.0°F (2000) | 0.80 in (2026) |
| January 26 | 55.9°F (2024) | -13.0°F (2003) | 1.37 in (1976) |
| January 27 | 54.0°F (2018) | -17.0°F (2003) | 2.33 in (1954) |
| January 28 | 61.0°F (1999) | -20.0°F (2014) | 0.98 in (2009) |
| January 29 | 63.0°F (2002) | -20.0°F (2014) | 0.92 in (1970) |
| January 30 | 64.9°F (2013) | -9.0°F (2026) | 0.84 in (1968) |
| January 31 | 59.0°F (2016) | -11.0°F (2019) | 2.05 in (1982) |