New Haven, CT
Climate overview — based on NOAA 1991-2020 normals from NEW HAVEN TWEED AP, CT US.
Year-round temperatures (°F)
Climate summary
New Haven has an annual average temperature of 52°F with about 41.8 inches of precipitation per year. The warmest month is July (average high 82.1°F), and the coldest is January (average low 23.0°F). April is typically the wettest month (4.19 in) and January the driest (2.72 in).
Best time to visit New Haven
Full guide →Climate change signal
All-time records →139 of 366 (38%) of New Haven's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1940s | 18 | |
| 1950s | 58 | |
| 1960s | 35 | |
| 1970s | 35 | |
| 2000s | 39 | |
| 2010s | 87 | |
| 2020s | 94 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 38.1°F | 23.0°F | 30.5°F | 2.72 in | — | 10 |
| February | 40.2°F | 23.9°F | 32.0°F | 2.84 in | — | 9 |
| March | 47.0°F | 30.1°F | 38.5°F | 3.66 in | — | 10 |
| April | 57.8°F | 39.3°F | 48.5°F | 4.19 in | — | 11 |
| May | 67.7°F | 49.4°F | 58.5°F | 3.54 in | — | 13 |
| June | 76.4°F | 59.3°F | 67.9°F | 3.47 in | — | 12 |
| July | 82.1°F | 65.7°F | 73.9°F | 3.36 in | — | 10 |
| August | 81.0°F | 64.7°F | 72.9°F | 3.55 in | — | 10 |
| September | 74.7°F | 57.3°F | 66.0°F | 4.03 in | — | 9 |
| October | 63.8°F | 45.5°F | 54.7°F | 3.78 in | — | 11 |
| November | 53.4°F | 35.9°F | 44.7°F | 3.12 in | — | 9 |
| December | 43.7°F | 28.9°F | 36.3°F | 3.53 in | — | 11 |
Climate twins of New Haven
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).