Ansonia, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ansonia, a city in New Haven County, Connecticut.
Tonight
50°F
Patchy Fog
Patchy fog after 11pm. Partly cloudy, with a low around 50. Southwest wind around 5 mph.
7-day forecast for Ansonia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Patchy Fog | 5 mph SW | 3% |
| Wednesday | 71°F | Patchy Fog then Sunny | 2 to 12 mph SW | 3% |
| Wednesday Night | 55°F | Partly Cloudy | 6 mph SW | 2% |
| Thursday | 69°F | Chance Rain Showers | 3 to 10 mph S | 29% |
| Thursday Night | 60°F | Rain Showers | 3 to 7 mph SW | 82% |
| Friday | 67°F | Showers And Thunderstorms | 6 mph S | 86% |
| Friday Night | 54°F | Showers And Thunderstorms | 2 to 6 mph W | 86% |
| Saturday | 64°F | Rain Showers Likely | 6 to 9 mph NW | 55% |
| Saturday Night | 42°F | Slight Chance Rain Showers | 8 mph NW | 21% |
| Sunday | 60°F | Slight Chance Rain Showers then Mostly Sunny | 9 mph NW | 21% |
| Sunday Night | 38°F | Partly Cloudy | 8 mph W | 14% |
| Monday | 58°F | Chance Light Rain | 8 to 15 mph NW | 26% |
| Monday Night | 38°F | Chance Light Rain | 12 mph W | 26% |
| Tuesday | 59°F | Slight Chance Light Rain then Mostly Sunny | 12 to 15 mph W | 21% |
Forecast source: National Weather Service (api.weather.gov) for Ansonia (41.344, -73.070). Updated through the day.
Growing snapshot for Ansonia
Last spring frost
Apr 25
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
6b
More local growing data for Ansonia: nearby ZIP 06401 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
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
West Haven
Woodmont
Climate data from the nearest NOAA station, Ansonia 1 Ne, Ct (1.2 mi from Ansonia). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.