Waterbury, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Waterbury, a city in New Haven County, Connecticut.
Today
83°F
Patchy Fog then Sunny
Patchy fog before 9am. Sunny, with a high near 83. West wind around 3 mph.
7-day forecast for Waterbury
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Patchy Fog then Sunny | 3 mph W | 0% |
| Tonight | 61°F | Mostly Cloudy | 3 mph W | 1% |
| Wednesday | 82°F | Partly Sunny | 2 to 6 mph W | 10% |
| Wednesday Night | 67°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph S | 19% |
| Thursday | 87°F | Showers And Thunderstorms Likely | 2 to 8 mph SW | 66% |
| Thursday Night | 70°F | Showers And Thunderstorms Likely then Partly Cloudy | 2 to 7 mph SW | 55% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph SW | 47% |
| Friday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 43% |
| Saturday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 8 mph W | 39% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 1 to 5 mph W | 39% |
| Sunday | 87°F | Mostly Sunny | 1 to 7 mph W | 11% |
| Sunday Night | 68°F | Mostly Clear | 1 to 5 mph SW | 11% |
| Monday | 89°F | Sunny then Slight Chance Showers And Thunderstorms | 1 to 9 mph W | 17% |
| Monday Night | 66°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 8 mph W | 17% |
Forecast source: National Weather Service (api.weather.gov) for Waterbury (41.559, -73.037). Updated through the day.
Growing snapshot for Waterbury
Last spring frost
Apr 26
First fall frost
Oct 16
Growing season
175 days
Hardiness zone
6b
More local growing data for Waterbury: nearby ZIP 06702 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
North Haven
Northford
Orange
Quinnipiac University
Wallingford Center
West Haven
Woodmont
Climate data from the nearest NOAA station, Meriden Markham Muni Ap, Ct (11.7 mi from Waterbury). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.