Harman US

Waterbury, CT Weather & Growing Conditions

Overnight
49°F
Mostly Cloudy
Mostly cloudy. Low around 49, with temperatures rising to around 51 overnight. North wind around 6 mph.

7-day forecast

WhenTempForecastWindPrecip
Overnight 49°F Mostly Cloudy 6 mph N 0%
Saturday 69°F Mostly Sunny 3 to 7 mph NE 0%
Saturday Night 50°F Mostly Cloudy 3 mph SE 2%
Sunday 65°F Rain 1 to 7 mph SE 96%
Sunday Night 51°F Rain 3 to 9 mph E 96%
Monday 66°F Slight Chance Light Rain then Partly Sunny 7 to 12 mph N 18%
Monday Night 46°F Mostly Cloudy 3 to 8 mph NE 5%
Tuesday 61°F Mostly Cloudy 10 mph NE 9%
Tuesday Night 45°F Mostly Cloudy 7 to 13 mph NE 7%
Wednesday 63°F Partly Sunny 15 mph NE 6%
Wednesday Night 45°F Mostly Cloudy then Chance Rain Showers 13 to 16 mph NE 25%
Thursday 62°F Chance Rain Showers 15 to 18 mph NE 31%
Thursday Night 46°F Chance Rain Showers 14 to 17 mph N 37%
Friday 63°F Chance Rain Showers 14 to 17 mph N 34%

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 (11.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.