Ansonia, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ansonia, a city in New Haven County, Connecticut.
This Afternoon
69°F
Partly Sunny
Partly sunny. High near 69, with temperatures falling to around 63 in the afternoon. South wind around 7 mph.
7-day forecast for Ansonia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Partly Sunny | 7 mph S | 0% |
| 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 then Light Rain Likely | 2 to 6 mph W | 86% |
| Saturday | 64°F | Light Rain Likely | 6 to 9 mph NW | 55% |
| Saturday Night | 42°F | Slight Chance Light Rain | 8 mph NW | 21% |
| Sunday | 60°F | Slight Chance Light Rain 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% |
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 3, 2026.