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.
Today
84°F
Sunny
Sunny, with a high near 84. East wind around 5 mph.
7-day forecast for North Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 5 mph E | 0% |
| Tonight | 63°F | Mostly Cloudy | 3 mph W | 4% |
| Wednesday | 83°F | Partly Sunny | 5 mph SW | 7% |
| Wednesday Night | 70°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph S | 24% |
| Thursday | 87°F | Chance Showers And Thunderstorms | 2 to 9 mph SW | 33% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 8 mph SW | 29% |
| Friday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph SW | 36% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 35% |
| Saturday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 1 to 7 mph SW | 36% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 1 to 5 mph W | 36% |
| Sunday | 88°F | Mostly Sunny | 1 to 7 mph W | 13% |
| Sunday Night | 71°F | Mostly Clear | 1 to 5 mph SW | 11% |
| Monday | 89°F | Sunny | 1 to 9 mph W | 13% |
| Monday Night | 69°F | Partly Cloudy | 2 to 8 mph W | 14% |
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
Ansonia
Branford Center
Cheshire Village
Derby
East Haven
Guilford Center
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 Aug 4, 2026.