National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

New Haven, Tweed-New Haven Airport (KHVN)

Lat: 41.26°NLon: 72.89°WElev: 13ft.

Overcast

59°F

15°C

Humidity 83%
Wind Speed SW 7 mph
Barometer 30.21 in (1022.8 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 21 May 4:53 pm EDT
Extended Forecast for

Derby CT

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 66. Northeast wind around 9 mph becoming southeast in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 47. Southeast wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Mostly Cloudy

  • Saturday

    Saturday: Rain likely, mainly after 2pm. Cloudy, with a high near 59. East wind 5 to 11 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 59 °F

    Chance Rain
    then Rain
    Likely

  • Saturday Night

    Saturday Night: Rain. Low around 46. East wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Rain

  • Sunday

    Sunday: Rain. High near 59. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 59 °F

    Rain

  • Sunday Night

    Sunday Night: Rain likely before 8pm, then a chance of showers after 8pm. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Rain Likely

  • Memorial Day

    Memorial Day: A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. Calm wind.
Friday
Mostly sunny, with a high near 66. Northeast wind around 9 mph becoming southeast in the afternoon.
Friday Night
Mostly cloudy, with a low around 47. Southeast wind around 5 mph becoming calm in the evening.
Saturday
Rain likely, mainly after 2pm. Cloudy, with a high near 59. East wind 5 to 11 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain. Low around 46. East wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain. High near 59. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
Rain likely before 8pm, then a chance of showers after 8pm. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Memorial Day
A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 69.
Monday Night
Mostly cloudy, with a low around 55.
Tuesday
Partly sunny, with a high near 80.
Tuesday Night
Mostly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Derby CT
 41.34°N 73.09°W (Elev. 118 ft)
Last Update:
2:25 pm EDT May 21, 2026
Forecast Valid:
5pm EDT May 21, 2026-6pm EDT May 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation