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.
Tonight
51°F
Patchy Fog
Patchy fog after 11pm. Partly cloudy, with a low around 51. South wind around 2 mph.
7-day forecast for North Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Patchy Fog | 2 mph S | 3% |
| Wednesday | 72°F | Patchy Fog then Sunny | 2 to 12 mph SW | 3% |
| Wednesday Night | 56°F | Partly Cloudy | 2 to 6 mph S | 2% |
| Thursday | 72°F | Chance Rain Showers | 3 to 12 mph S | 25% |
| Thursday Night | 61°F | Rain Showers | 3 to 7 mph SW | 81% |
| Friday | 68°F | Showers And Thunderstorms | 2 to 7 mph S | 86% |
| Friday Night | 55°F | Showers And Thunderstorms | 2 to 6 mph SW | 86% |
| Saturday | 66°F | Rain Showers Likely | 8 mph NW | 59% |
| Saturday Night | 43°F | Slight Chance Rain Showers | 7 mph NW | 23% |
| Sunday | 61°F | Slight Chance Rain Showers then Mostly Sunny | 6 to 9 mph NW | 20% |
| Sunday Night | 39°F | Partly Cloudy then Slight Chance Light Rain | 3 to 8 mph W | 15% |
| Monday | 60°F | Chance Light Rain | 8 to 15 mph NW | 26% |
| Monday Night | 38°F | Chance Light Rain | 7 to 10 mph W | 26% |
| Tuesday | 60°F | Slight Chance Light Rain then Mostly Sunny | 12 to 15 mph W | 22% |
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 Nov 4, 2026.