North Haven, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for North Haven, a community in New Haven County, Connecticut.
This Afternoon
81°F
Sunny
Sunny. High near 81, with temperatures falling to around 78 in the afternoon. Northwest wind around 7 mph.
7-day forecast for North Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Sunny | 7 mph NW | 0% |
| Tonight | 52°F | Partly Cloudy | 3 to 8 mph N | 0% |
| Saturday | 70°F | Mostly Sunny | 5 to 8 mph E | 0% |
| Saturday Night | 55°F | Mostly Cloudy | 2 to 6 mph SE | 2% |
| Sunday | 68°F | Showers And Thunderstorms | 3 to 10 mph SE | 89% |
| Sunday Night | 56°F | Showers And Thunderstorms | 3 to 13 mph SE | 89% |
| Monday | 67°F | Chance Rain Showers | 9 to 14 mph NE | 43% |
| Monday Night | 51°F | Slight Chance Rain Showers | 6 to 13 mph NE | 22% |
| Tuesday | 64°F | Slight Chance Rain Showers | 14 mph NE | 23% |
| Tuesday Night | 49°F | Mostly Cloudy | 10 to 15 mph NE | 11% |
| Wednesday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 17 mph NE | 15% |
| Wednesday Night | 49°F | Slight Chance Rain Showers | 12 to 16 mph NE | 24% |
| Thursday | 64°F | Chance Rain Showers | 18 mph NE | 32% |
| Thursday Night | 50°F | Chance Rain Showers | 10 to 16 mph NE | 34% |
Forecast source: National Weather Service (api.weather.gov) for North Haven (41.381, -72.856). Updated through the day.
Growing snapshot for North Haven
Last spring frost
Apr 18
First fall frost
Oct 26
Growing season
191 days
Hardiness zone
6b
More local growing data for North Haven: nearby ZIP 06473 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
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Cheshire Village
Derby
East Haven
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Heritage Village
Madison Center
Meriden
Milford city
Naugatuck
New Haven
Northford
Orange
Quinnipiac University
Wallingford Center
Waterbury
West Haven
Woodmont
Climate data from the nearest NOAA station, Mt Carmel, Ct (3 mi from North Haven). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.