North Haven, CT Weather & Growing Conditions
Tonight
51°F
Patchy Fog
Patchy fog after 11pm. Partly cloudy, with a low around 51. South wind around 2 mph.
7-day forecast
| 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). Updated through the day.
Growing snapshot for North Haven, CT
Last spring frost
Apr 18
First fall frost
Oct 26
Growing season
191 days
Hardiness zone
6b
Explore more for North Haven, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Mt Carmel, Ct (3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.