Climate averages 1991–2020
New Haven weather
in April.
A cool, wet month: the 7th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a cool month in New Haven: daytime highs average 13.1°C and nights cool to about 5.2°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 116 mm of rain on roughly 12 days, which makes April a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 18 min on an average April day.
The nearest other city in this atlas is Bridgeport (26 km away). In April its highs average 13.6°C, about as warm as New Haven, with 104 mm of rain.
Among the 498 cities listed in the United States, New Haven ranks joint 448th of 498 for the warmest April highs and joint 448th of 498 for the driest April (rainfall, lowest first). The mean April high of those 498 cities is 19.4°C; New Haven is 6.3°C cooler than that mean.
From April to May, average highs rise by 5.3°C to 18.4°C, and monthly rainfall falls from 116 mm to 98 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
New Haven climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.7°C-3.6°C | -3.6°C | 108 | 10.1 | 9.610 h |
| February | 3.6°C-3.3°C | -3.3°C | 97 | 9.2 | 10.611 h |
| March | 7.3°C0.0°C | 0.0°C | 128 | 10.9 | 11.912 h |
| April, selected | 13.1°C5.2°C | 5.2°C | 116 | 11.5 | 13.313 h |
| May | 18.4°C10.6°C | 10.6°C | 98 | 11.6 | 14.514 h |
| June | 23.6°C16.2°C | 16.2°C | 98 | 10.5 | 15.115 h |
| July | 27.0°C19.9°C | 19.9°C | 82 | 9.5 | 14.815 h |
| August | 26.3°C19.6°C | 19.6°C | 102 | 9.6 | 13.814 h |
| September | 22.6°C16.2°C | 16.2°C | 109 | 8.9 | 12.513 h |
| October | 16.5°C10.5°C | 10.5°C | 129 | 10.1 | 11.111 h |
| November | 10.7°C4.9°C | 4.9°C | 110 | 9.5 | 9.910 h |
| December | 5.6°C0.0°C | 0.0°C | 137 | 11.2 | 9.39 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Bridgeport in AprilUnited States · 26 kmHigh 13.6°C · Low 5.3°C · 104 mm rain
- Waterbury in AprilUnited States · 30 kmHigh 14.4°C · Low 4.4°C · 97 mm rain
- New Britain in AprilUnited States · 41 kmHigh 14.6°C · Low 4.0°C · 91 mm rain
- Danbury in AprilUnited States · 45 kmHigh 14.4°C · Low 4.4°C · 97 mm rain
- Norwalk in AprilUnited States · 45 kmHigh 14.0°C · Low 5.5°C · 93 mm rain
- Hartford in AprilUnited States · 55 kmHigh 14.7°C · Low 3.8°C · 91 mm rain
- Stamford in AprilUnited States · 58 kmHigh 14.3°C · Low 5.5°C · 93 mm rain
- Greenburgh in AprilUnited States · 82 kmHigh 14.7°C · Low 5.4°C · 93 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for New Haven) is explained once on the New Haven year overview and on the Sources, method and limits page.