West Haven, CT Weather & Growing Conditions
Tonight
55°F
Partly Cloudy
Partly cloudy, with a low around 55. North wind 5 to 13 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Partly Cloudy | 5 to 13 mph N | 0% |
| Saturday | 68°F | Mostly Sunny | 7 to 12 mph NE | 0% |
| Saturday Night | 59°F | Mostly Cloudy | 7 mph SE | 2% |
| Sunday | 68°F | Showers And Thunderstorms | 7 to 13 mph SE | 88% |
| Sunday Night | 58°F | Showers And Thunderstorms | 2 to 13 mph SE | 88% |
| Monday | 66°F | Chance Rain Showers | 9 to 14 mph NE | 47% |
| Monday Night | 53°F | Slight Chance Rain Showers | 8 to 15 mph NE | 23% |
| Tuesday | 63°F | Chance Rain Showers | 15 mph NE | 25% |
| Tuesday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 14 to 17 mph NE | 15% |
| Wednesday | 63°F | Mostly Cloudy then Slight Chance Rain Showers | 15 to 18 mph NE | 15% |
| Wednesday Night | 51°F | Chance Rain Showers | 15 to 18 mph NE | 26% |
| Thursday | 62°F | Chance Rain Showers | 18 mph NE | 33% |
| Thursday Night | 52°F | Chance Rain Showers | 12 to 16 mph NE | 35% |
| Friday | 66°F | Chance Rain Showers | 12 to 16 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for West Haven, CT
Last spring frost
Apr 17
First fall frost
Oct 27
Growing season
193 days
Hardiness zone
7a
Explore more for West Haven, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, New Haven Tweed Ap, Ct (4.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.