NWS Forecast for Derby CT

National Weather Service Forecast for: Derby CT
Issued by: National Weather Service New York, NY

Updated: 4:59 pm EST Nov 1, 2026

Tonight Mostly Clear then Patchy Frost and Patchy Fog	Monday Mostly Sunny	Monday Night Partly Cloudy	Tuesday Mostly Sunny	Tuesday Night Partly Cloudy	Wednesday Mostly Sunny	Wednesday Night Partly Cloudy	Thursday Chance Rain	Thursday Night Rain Likely
Lo 38 °F	Hi 66 °F	Lo 42 °F	Hi 68 °F	Lo 49 °F	Hi 70 °F	Lo 54 °F	Hi 70 °F	Lo 57 °F

Tonight	Patchy fog after 2am. Patchy frost after 4am. Otherwise, mostly clear, with a low around 38. Calm wind.
Monday	Mostly sunny, with a high near 66. Calm wind becoming southwest 5 to 9 mph in the morning.
Monday Night	Partly cloudy, with a low around 42. Calm wind.
Tuesday	Mostly sunny, with a high near 68. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night	Partly cloudy, with a low around 49. Calm wind.
Wednesday	Mostly sunny, with a high near 70.
Wednesday Night	Partly cloudy, with a low around 54.
Thursday	A 40 percent chance of rain. Mostly cloudy, with a high near 70.
Thursday Night	Rain likely, mainly after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Friday	Rain likely. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
Friday Night	Rain likely. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Saturday	A 40 percent chance of rain. Partly sunny, with a high near 63.
Saturday Night	Partly cloudy, with a low around 44.
Sunday	Mostly sunny, with a high near 62.

Forecast from NOAA-NWS for Derby CT.