National Weather Service Forecast for: Waterbury CT
Issued by: National Weather Service New York, NY
Updated: 7:25 pm EST Dec 17, 2025
 
Tonight

Tonight: Mostly clear, with a low around 22. West wind around 5 mph becoming calm in the evening.
Mostly Clear

 Thursday

Thursday: Mostly sunny, with a high near 50. Wind chill values between 20 and 30 early. Calm wind becoming south 5 to 8 mph in the afternoon.
Mostly Sunny

 Thursday
Night
Thursday Night: Rain, mainly after 1am. Temperature rising to around 53 by 5am. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Chance Rain
then Rain and
Breezy
 Friday

Friday: Rain before 4pm, then a chance of rain and snow. Some thunder is also possible. Temperature rising to near 55 by 9am, then falling to around 42 during the remainder of the day. Breezy, with a south wind 15 to 23 mph becoming west in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Rain and
Breezy then
Rain/Snow
 Friday
Night
Friday Night: A 30 percent chance of snow before 7pm. Partly cloudy, with a low around 23. West wind 8 to 16 mph, with gusts as high as 40 mph.
Chance Snow
then Partly
Cloudy
 Saturday

Saturday: Increasing clouds, with a high near 39.
Increasing
Clouds
 Saturday
Night
Saturday Night: Cloudy, with a low around 30.
Cloudy

 Sunday

Sunday: Mostly sunny, with a high near 45.
Mostly Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 21.
Partly Cloudy
Lo 22 °F Hi 50 °F Lo 44 °F⇑ Hi 55 °F⇓ Lo 23 °F Hi 39 °F Lo 30 °F Hi 45 °F Lo 21 °F

Wind Advisory
Hazardous Weather Outlook
 

Tonight
 
 Mostly clear, with a low around 22. West wind around 5 mph becoming calm in the evening.
Thursday
 
 Mostly sunny, with a high near 50. Wind chill values between 20 and 30 early. Calm wind becoming south 5 to 8 mph in the afternoon.
Thursday Night
 
 Rain, mainly after 1am. Temperature rising to around 53 by 5am. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
 
 Rain before 4pm, then a chance of rain and snow. Some thunder is also possible. Temperature rising to near 55 by 9am, then falling to around 42 during the remainder of the day. Breezy, with a south wind 15 to 23 mph becoming west in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Friday Night
 
 A 30 percent chance of snow before 7pm. Partly cloudy, with a low around 23. West wind 8 to 16 mph, with gusts as high as 40 mph.
Saturday
 
 Increasing clouds, with a high near 39.
Saturday Night
 
 Cloudy, with a low around 30.
Sunday
 
 Mostly sunny, with a high near 45.
Sunday Night
 
 Partly cloudy, with a low around 21.
Monday
 
 Sunny, with a high near 32.
Monday Night
 
 Partly cloudy, with a low around 20.
Tuesday
 
 A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 40%.
Tuesday Night
 
 A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Wednesday
 
 Mostly sunny, with a high near 39.

 

Forecast from NOAA-NWS for Waterbury CT.