National Weather Service Forecast for: Derby CT
Issued by: National Weather Service New York, NY
Updated: 2:01 am EST Dec 5, 2025
 
Overnight

Overnight: Mostly clear, with a low around 12. North wind around 6 mph becoming calm.
Mostly Clear

 Friday

Friday: Increasing clouds, with a high near 31. Wind chill values between 15 and 25. Calm wind becoming southeast around 6 mph.
Increasing
Clouds

 Friday
Night
Friday Night: A 20 percent chance of light snow after 1am. Mostly cloudy, with a low around 23. Calm wind.
Mostly Cloudy
then Slight
Chance Light
Snow
 Saturday

Saturday: Mostly cloudy, with a high near 42. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Mostly Cloudy

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 24. Northwest wind 3 to 5 mph.
Partly Cloudy

 Sunday

Sunday: Increasing clouds, with a high near 40.
Increasing
Clouds

 Sunday
Night
Sunday Night: A 30 percent chance of snow showers before 1am. Mostly cloudy, with a low around 22.
Chance Snow
Showers

 Monday

Monday: Sunny, with a high near 31.
Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 12.
Mostly Clear
Lo 12 °F Hi 31 °F Lo 23 °F Hi 42 °F Lo 24 °F Hi 40 °F Lo 22 °F Hi 31 °F Lo 12 °F

 

Overnight
 
 Mostly clear, with a low around 12. North wind around 6 mph becoming calm.
Friday
 
 Increasing clouds, with a high near 31. Wind chill values between 15 and 25. Calm wind becoming southeast around 6 mph.
Friday Night
 
 A 20 percent chance of light snow after 1am. Mostly cloudy, with a low around 23. Calm wind.
Saturday
 
 Mostly cloudy, with a high near 42. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Saturday Night
 
 Partly cloudy, with a low around 24. Northwest wind 3 to 5 mph.
Sunday
 
 Increasing clouds, with a high near 40.
Sunday Night
 
 A 30 percent chance of snow showers before 1am. Mostly cloudy, with a low around 22.
Monday
 
 Sunny, with a high near 31.
Monday Night
 
 Mostly clear, with a low around 12.
Tuesday
 
 Partly sunny, with a high near 36.
Tuesday Night
 
 Mostly cloudy, with a low around 27.
Wednesday
 
 A 30 percent chance of rain. Mostly cloudy, with a high near 47.
Wednesday Night
 
 Rain likely. Cloudy, with a low around 35. Chance of precipitation is 60%.
Thursday
 
 A 40 percent chance of rain. Mostly cloudy, with a high near 44.

 

Forecast from NOAA-NWS for Derby CT.