New Haven, CT Weather & Growing Conditions
This Afternoon
70°F
Sunny
Sunny. High near 70, with temperatures falling to around 65 in the afternoon. South wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Sunny | 9 mph S | 0% |
| Tonight | 57°F | Partly Cloudy | 6 mph S | 3% |
| Thursday | 70°F | Chance Light Rain | 3 to 13 mph S | 34% |
| Thursday Night | 61°F | Light Rain Likely | 2 to 9 mph SW | 70% |
| Friday | 69°F | Light Rain Likely | 5 mph S | 70% |
| Friday Night | 52°F | Light Rain Likely | 2 mph NW | 65% |
| Saturday | 66°F | Mostly Sunny then Slight Chance Light Rain | 2 to 8 mph NW | 21% |
| Saturday Night | 44°F | Chance Light Rain | 7 to 12 mph W | 29% |
| Sunday | 60°F | Chance Light Rain then Mostly Sunny | 9 to 14 mph NW | 29% |
| Sunday Night | 41°F | Partly Cloudy | 7 to 12 mph W | 1% |
| Monday | 58°F | Sunny | 10 to 16 mph W | 5% |
| Monday Night | 38°F | Mostly Clear | 5 to 9 mph W | 5% |
| Tuesday | 61°F | Sunny | 9 to 14 mph W | 1% |
| Tuesday Night | 39°F | Mostly Clear | 3 to 8 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for New Haven, CT
Last spring frost
Apr 17
First fall frost
Oct 27
Growing season
193 days
Hardiness zone
7a
Explore more for New Haven, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, New Haven Tweed Ap, Ct (3.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.