West Haven, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for West Haven, a city in New Haven County, Connecticut.
This Afternoon
79°F
Sunny
Sunny. High near 79, with temperatures falling to around 77 in the afternoon. Northwest wind around 9 mph.
7-day forecast for West Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Sunny | 9 mph NW | 0% |
| 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% |
Forecast source: National Weather Service (api.weather.gov) for West Haven (41.272, -72.967). Updated through the day.
Growing snapshot for West Haven
Last spring frost
Apr 17
First fall frost
Oct 27
Growing season
193 days
Hardiness zone
7a
More local growing data for West Haven: nearby ZIP 06516 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
Ansonia
Branford Center
Cheshire Village
Derby
East Haven
Guilford Center
Heritage Village
Madison Center
Meriden
Milford city
Naugatuck
New Haven
North Haven
Northford
Orange
Quinnipiac University
Wallingford Center
Waterbury
Woodmont
Climate data from the nearest NOAA station, New Haven Tweed Ap, Ct (4.1 mi from West Haven). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.