National Weather Service Forecast for: Derby CT
Issued by: National Weather Service New York, NY
Updated: 1:31 am EDT May 31, 2025
 
Overnight

Overnight: Showers and possibly a thunderstorm. Areas of fog before 2am. Low around 58. Light east wind. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and
Areas Fog

 Saturday

Saturday: Showers and possibly a thunderstorm before 11am, then a chance of showers between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. High near 71. South wind 7 to 14 mph becoming northwest in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers

 Saturday
Night
Saturday Night: Showers likely and possibly a thunderstorm before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 49. West wind around 9 mph. Chance of precipitation is 60%.
Showers
Likely then
Slight Chance
Showers
 Sunday

Sunday: A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 69. West wind 10 to 13 mph.
Mostly Sunny
then Slight
Chance
Showers
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 50. West wind 3 to 6 mph.
Partly Cloudy

 Monday

Monday: Mostly sunny, with a high near 73.
Mostly Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 53.
Mostly Clear

 Tuesday

Tuesday: Sunny, with a high near 79.
Sunny

 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 58.
Partly Cloudy
Lo 58 °F Hi 71 °F Lo 49 °F Hi 69 °F Lo 50 °F Hi 73 °F Lo 53 °F Hi 79 °F Lo 58 °F

 

Overnight
 
 Showers and possibly a thunderstorm. Areas of fog before 2am. Low around 58. Light east wind. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
 
 Showers and possibly a thunderstorm before 11am, then a chance of showers between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. High near 71. South wind 7 to 14 mph becoming northwest in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
 
 Showers likely and possibly a thunderstorm before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 49. West wind around 9 mph. Chance of precipitation is 60%.
Sunday
 
 A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 69. West wind 10 to 13 mph.
Sunday Night
 
 Partly cloudy, with a low around 50. West wind 3 to 6 mph.
Monday
 
 Mostly sunny, with a high near 73.
Monday Night
 
 Mostly clear, with a low around 53.
Tuesday
 
 Sunny, with a high near 79.
Tuesday Night
 
 Partly cloudy, with a low around 58.
Wednesday
 
 Mostly sunny, with a high near 84.
Wednesday Night
 
 Partly cloudy, with a low around 63.
Thursday
 
 Partly sunny, with a high near 85.
Thursday Night
 
 A 30 percent chance of showers. Mostly cloudy, with a low around 66.
Friday
 
 A 40 percent chance of showers. Mostly cloudy, with a high near 81.

 

Forecast from NOAA-NWS for Derby CT.