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
69°F
Partly Sunny
Partly sunny. High near 69, with temperatures falling to around 65 in the afternoon. Southwest wind around 6 mph.
7-day forecast for West Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Partly Sunny | 6 mph SW | 0% |
| Tonight | 53°F | Partly Cloudy then Patchy Fog | 6 mph SW | 3% |
| Wednesday | 70°F | Patchy Fog then Sunny | 3 to 12 mph SW | 3% |
| Wednesday Night | 58°F | Partly Cloudy | 7 mph SW | 2% |
| Thursday | 69°F | Chance Rain Showers | 5 to 12 mph S | 25% |
| Thursday Night | 61°F | Rain Showers | 5 to 9 mph SW | 83% |
| Friday | 67°F | Showers And Thunderstorms | 7 mph S | 87% |
| Friday Night | 56°F | Showers And Thunderstorms | 3 to 7 mph W | 87% |
| Saturday | 64°F | Rain Showers Likely | 9 mph NW | 59% |
| Saturday Night | 46°F | Slight Chance Rain Showers | 9 mph NW | 23% |
| Sunday | 60°F | Slight Chance Rain Showers then Mostly Sunny | 10 mph W | 20% |
| Sunday Night | 42°F | Partly Cloudy then Slight Chance Light Rain | 7 to 10 mph W | 15% |
| Monday | 59°F | Chance Light Rain | 12 to 16 mph NW | 27% |
| Monday Night | 41°F | Chance Light Rain | 10 to 14 mph W | 27% |
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 Nov 4, 2026.