March weather in New Haven, CT
The average temperature in New Haven in March is 38.5°F (30.1°F–47.0°F). Average precipitation: 3.66 inches.
March is a spring month in New Haven, and is cooler than the annual average of 52°F. Daily temperatures swing about 16.9°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 11h 43m. For travel, March is cool.
Avg High
47.0°F
Avg Low
30.1°F
Precipitation
3.66 in
Daylight
11h 43m
March records in New Haven
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| March 1 | 57.9°F (2018) | 5.2°F (2015) | 0.72 in (1963) |
| March 2 | 59.0°F (2017) | 9.0°F (1962) | 3.47 in (2007) |
| March 3 | 68.0°F (2024) | 8.1°F (1962) | 0.99 in (1972) |
| March 4 | 55.9°F (2024) | 5.0°F (1950) | 1.34 in (1953) |
| March 5 | 62.1°F (1974) | 7.0°F (1948) | 1.42 in (2025) |
| March 6 | 57.0°F (1949) | 1.0°F (1948) | 1.73 in (2024) |
| March 7 | 61.0°F (2022) | 3.9°F (2003) | 1.97 in (1967) |
| March 8 | 62.1°F (2009) | 12.2°F (2019) | 0.63 in (1961) |
| March 9 | 64.9°F (2020) | 9.1°F (2007) | 1.28 in (2024) |
| March 10 | 69.1°F (2016) | 16.0°F (1960) | 0.69 in (1964) |
| March 11 | 64.0°F (1977) | 12.0°F (1960) | 1.17 in (1952) |
| March 12 | 66.0°F (2021) | 13.1°F (2017) | 1.17 in (1968) |
| March 13 | 68.0°F (2020) | 12.9°F (1948) | 2.91 in (2010) |
| March 14 | 69.1°F (2012) | 15.1°F (1948) | 1.20 in (1958) |
| March 15 | 66.0°F (2024) | 19.2°F (2017) | 1.78 in (1953) |
| March 16 | 62.1°F (2010) | 18.0°F (1956) | 1.68 in (2026) |
| March 17 | 62.1°F (2003) | 12.0°F (1967) | 1.20 in (1972) |
| March 18 | 75.0°F (2011) | 10.0°F (1967) | 0.87 in (1968) |
| March 19 | 66.9°F (2012) | 5.0°F (1967) | 1.03 in (2008) |
| March 20 | 69.1°F (2010) | 8.1°F (1949) | 1.35 in (1951) |
| March 21 | 68.0°F (2012) | 17.1°F (1965) | 3.76 in (1974) |
| March 22 | 73.9°F (1948) | 19.0°F (2002) | 1.80 in (1977) |
| March 23 | 71.1°F (2012) | 15.1°F (2004) | 2.92 in (2024) |
| March 24 | 64.9°F (1948) | 19.2°F (2014) | 0.90 in (2022) |
| March 25 | 62.1°F (1963) | 16.0°F (1956) | 1.32 in (1969) |
| March 26 | 77.0°F (2021) | 12.0°F (1960) | 1.15 in (1973) |
| March 27 | 73.0°F (2007) | 18.1°F (2014) | 0.51 in (2002) |
| March 28 | 68.0°F (1960) | 19.0°F (1966) | 2.36 in (2005) |
| March 29 | 72.0°F (2025) | 19.9°F (1974) | 2.16 in (2010) |
| March 30 | 73.0°F (1977) | 19.0°F (1970) | 2.33 in (1951) |
| March 31 | 68.0°F (2026) | 21.9°F (1964) | 2.10 in (2004) |