National Weather Service Forecast for: Waterbury CT
Issued by: National Weather Service New York, NY
Updated: 2:20 pm EDT Oct 6, 2026
 
Tonight

Tonight: Clear, with a low around 35. Light north wind.
Clear
 Wednesday

Wednesday: Sunny, with a high near 64. Light southwest wind increasing to 5 to 10 mph in the morning.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 51. Southwest wind 3 to 6 mph.
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 72. West wind 5 to 10 mph.
Sunny
 Thursday
Night
Thursday Night: Mostly clear, with a low around 48. Light west wind.
Mostly Clear
 Friday

Friday: Sunny, with a high near 66.
Sunny
 Friday
Night
Friday Night: Mostly clear, with a low around 44.
Mostly Clear
 Saturday

Saturday: Sunny, with a high near 68.
Sunny
 Saturday
Night
Saturday Night: Mostly clear, with a low around 49.
Mostly Clear
Lo 35 °F Hi 64 °F Lo 51 °F Hi 72 °F Lo 48 °F Hi 66 °F Lo 44 °F Hi 68 °F Lo 49 °F

Frost Advisory
Hazardous Weather Outlook
 

Tonight
 
 Clear, with a low around 35. Light north wind.
Wednesday
 
 Sunny, with a high near 64. Light southwest wind increasing to 5 to 10 mph in the morning.
Wednesday Night
 
 Mostly clear, with a low around 51. Southwest wind 3 to 6 mph.
Thursday
 
 Sunny, with a high near 72. West wind 5 to 10 mph.
Thursday Night
 
 Mostly clear, with a low around 48. Light west wind.
Friday
 
 Sunny, with a high near 66.
Friday Night
 
 Mostly clear, with a low around 44.
Saturday
 
 Sunny, with a high near 68.
Saturday Night
 
 Mostly clear, with a low around 49.
Sunday
 
 Mostly sunny, with a high near 69.
Sunday Night
 
 A 50 percent chance of showers. Mostly cloudy, with a low around 55.
Columbus Day
 
 A 40 percent chance of showers. Partly sunny, with a high near 68.
Monday Night
 
 Mostly cloudy, with a low around 54.
Tuesday
 
 Mostly sunny, with a high near 68.

 

Forecast from NOAA-NWS for Waterbury CT.