Waterbury, CT Weather & Growing Conditions
This Afternoon
82°F
Mostly Sunny
Mostly sunny, with a high near 82. Southwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Mostly Sunny | 3 mph SW | 0% |
| Tonight | 60°F | Partly Cloudy | 0 to 3 mph SW | 3% |
| Wednesday | 81°F | Partly Sunny | 0 to 6 mph W | 4% |
| Wednesday Night | 66°F | Mostly Cloudy then Slight Chance Rain Showers | 0 to 5 mph S | 18% |
| Thursday | 85°F | Chance Rain Showers | 0 to 8 mph SW | 41% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 54% |
| Friday | 87°F | Mostly Sunny then Chance Rain Showers | 2 to 8 mph SW | 35% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 1 to 5 mph W | 48% |
| Saturday | 85°F | Mostly Sunny then Chance Rain Showers | 1 to 7 mph W | 32% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 1 to 5 mph W | 43% |
| Sunday | 87°F | Mostly Sunny then Slight Chance Rain Showers | 1 to 7 mph W | 17% |
| Sunday Night | 68°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph SW | 22% |
| Monday | 87°F | Sunny | 2 to 9 mph W | 11% |
| Monday Night | 68°F | Partly Cloudy | 7 mph W | 13% |
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 (6.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.