Waterbury, CT Weather & Growing Conditions
Today
81°F
Sunny
Sunny, with a high near 81. West wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 3 mph W | 0% |
| Tonight | 60°F | Mostly Cloudy | 3 mph W | 0% |
| Wednesday | 80°F | Partly Sunny | 2 to 6 mph W | 9% |
| Wednesday Night | 66°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph S | 19% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 2 to 8 mph SW | 68% |
| Thursday Night | 69°F | Showers And Thunderstorms Likely then Partly Cloudy | 2 to 7 mph SW | 56% |
| Friday | 85°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph SW | 47% |
| Friday Night | 68°F | Chance Showers And Thunderstorms | 1 to 5 mph W | 42% |
| Saturday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 8 mph W | 40% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 1 to 5 mph W | 40% |
| Sunday | 84°F | Mostly Sunny | 1 to 7 mph W | 12% |
| Sunday Night | 67°F | Mostly Clear | 1 to 5 mph SW | 12% |
| Monday | 85°F | Sunny then Slight Chance Showers And Thunderstorms | 2 to 9 mph W | 18% |
| Monday Night | 65°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 to 9 mph W | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Waterbury, CT
Last spring frost
Apr 26
First fall frost
Oct 16
Growing season
175 days
Hardiness zone
6b
Explore more for Waterbury, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Meriden Markham Muni Ap, Ct (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.