January weather in New Haven, CT
The average temperature in New Haven in January is 30.5°F (23.0°F–38.1°F). Average precipitation: 2.72 inches.
January is a winter month in New Haven, and is cooler than the annual average of 52°F. Daily temperatures swing about 15.1°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 20m. For travel, January is cold.
Avg High
38.1°F
Avg Low
23.0°F
Precipitation
2.72 in
Daylight
9h 20m
January records in New Haven
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 60.1°F (1966) | 3.2°F (2018) | 1.99 in (2007) |
| January 2 | 54.0°F (2022) | 1.9°F (1968) | 0.87 in (1959) |
| January 3 | 53.1°F (1960) | 4.1°F (2014) | 1.03 in (1953) |
| January 4 | 62.1°F (2023) | 2.1°F (2014) | 1.10 in (1971) |
| January 5 | 55.0°F (1950) | 5.0°F (1977) | 1.02 in (1949) |
| January 6 | 66.0°F (2007) | 6.3°F (2018) | 2.60 in (1962) |
| January 7 | 55.9°F (2012) | 0.1°F (2018) | 1.99 in (1958) |
| January 8 | 59.0°F (1949) | -0.9°F (1968) | 1.19 in (2007) |
| January 9 | 62.1°F (2008) | -5.1°F (1968) | 1.23 in (2024) |
| January 10 | 57.9°F (2016) | 0.0°F (2004) | 1.40 in (1977) |
| January 11 | 57.0°F (2020) | 1.0°F (1968) | 0.92 in (2008) |
| January 12 | 69.1°F (2020) | 1.9°F (1968) | 1.04 in (2012) |
| January 13 | 57.0°F (2023) | 5.0°F (1958) | 1.29 in (1948) |
| January 14 | 60.1°F (1950) | -0.9°F (1954) | 1.44 in (2006) |
| January 15 | 52.0°F (1962) | -6.0°F (1957) | 0.87 in (1958) |
| January 16 | 53.1°F (1953) | -3.8°F (2009) | 0.77 in (2021) |
| January 17 | 55.0°F (1949) | 1.0°F (1971) | 0.99 in (2022) |
| January 18 | 57.0°F (2006) | -2.9°F (1957) | 0.96 in (2015) |
| January 19 | 54.0°F (1951) | -8.0°F (1948) | 0.40 in (1974) |
| January 20 | 57.0°F (1951) | 3.9°F (1957) | 0.97 in (2019) |
| January 21 | 55.9°F (2006) | -2.0°F (1961) | 1.16 in (1974) |
| January 22 | 53.1°F (1959) | -7.1°F (1961) | 1.17 in (1958) |
| January 23 | 54.0°F (1974) | 0.0°F (1976) | 0.80 in (1965) |
| January 24 | 64.9°F (1967) | -1.8°F (2011) | 1.30 in (2019) |
| January 25 | 59.0°F (2024) | 1.9°F (1961) | 1.55 in (1958) |
| January 26 | 55.9°F (1950) | 1.9°F (1948) | 1.25 in (1952) |
| January 27 | 63.0°F (1974) | 3.9°F (2003) | 1.85 in (1976) |
| January 28 | 54.0°F (2006) | -2.9°F (1961) | 1.04 in (2009) |
| January 29 | 66.0°F (2002) | -2.0°F (2005) | 1.00 in (1973) |
| January 30 | 55.9°F (2002) | 1.9°F (1948) | 0.83 in (1956) |
| January 31 | 59.0°F (2013) | -0.9°F (1948) | 0.86 in (1949) |