Ansonia, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ansonia, a city in New Haven County, Connecticut.
Overnight
52°F
Partly Cloudy
Partly cloudy, with a low around 52. North wind 8 to 12 mph.
7-day forecast for Ansonia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Partly Cloudy | 8 to 12 mph N | 0% |
| Saturday | 67°F | Mostly Sunny | 5 to 9 mph E | 0% |
| Saturday Night | 55°F | Mostly Cloudy | 6 mph SE | 3% |
| Sunday | 66°F | Showers And Thunderstorms | 6 to 10 mph SE | 90% |
| Sunday Night | 55°F | Showers And Thunderstorms | 2 to 13 mph S | 90% |
| Monday | 65°F | Chance Rain Showers | 9 to 14 mph NE | 41% |
| Monday Night | 50°F | Slight Chance Rain Showers | 6 to 14 mph NE | 23% |
| Tuesday | 61°F | Slight Chance Rain Showers | 15 mph NE | 24% |
| Tuesday Night | 48°F | Mostly Cloudy | 13 to 16 mph NE | 13% |
| Wednesday | 61°F | Partly Sunny then Slight Chance Rain Showers | 17 mph NE | 15% |
| Wednesday Night | 48°F | Slight Chance Rain Showers | 14 to 17 mph NE | 24% |
| Thursday | 61°F | Chance Rain Showers | 15 to 18 mph NE | 32% |
| Thursday Night | 49°F | Chance Rain Showers | 13 to 17 mph NE | 35% |
| Friday | 64°F | Chance Rain Showers | 13 to 17 mph N | 34% |
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
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Derby
East Haven
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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 Sep 19, 2026.