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.
Today
82°F
Mostly Sunny
Mostly sunny, with a high near 82. West wind around 5 mph.
7-day forecast for West Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Mostly Sunny | 5 mph W | 0% |
| Tonight | 64°F | Mostly Cloudy | 3 mph W | 4% |
| Wednesday | 82°F | Partly Sunny | 5 mph SW | 7% |
| Wednesday Night | 70°F | Mostly Cloudy then Chance Rain Showers | 5 mph S | 25% |
| Thursday | 86°F | Chance Showers And Thunderstorms | 3 to 9 mph SW | 28% |
| Thursday Night | 73°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 8 mph SW | 25% |
| Friday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph SW | 31% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 6 mph SW | 31% |
| Saturday | 83°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph SW | 33% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 6 mph SW | 33% |
| Sunday | 84°F | Mostly Sunny | 3 to 8 mph W | 14% |
| Sunday Night | 72°F | Mostly Clear | 6 mph SW | 10% |
| Monday | 86°F | Sunny | 3 to 9 mph W | 11% |
| Monday Night | 70°F | Partly Cloudy | 3 to 8 mph W | 13% |
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 Aug 4, 2026.