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.

Fair

73°F

23°C

Humidity 84%
Wind Speed Calm
Barometer 29.92 in (1013.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 20 Aug 1:53 am EDT
Extended Forecast for

Derby CT

  • Overnight

    Overnight: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers, mainly after 2pm. Increasing clouds, with a high near 81. Light and variable wind becoming north around 5 mph in the morning.

    High: 81 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers before 2am. Mostly cloudy, with a low around 61. Light and variable wind.

    Low: 61 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly after 2pm. Partly sunny, with a high near 80. East wind around 7 mph.

    High: 80 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 61. Light northeast wind.

    Low: 61 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 78 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely then
    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 66. Calm wind.
Thursday
A 30 percent chance of showers, mainly after 2pm. Increasing clouds, with a high near 81. Light and variable wind becoming north around 5 mph in the morning.
Thursday Night
A 50 percent chance of showers before 2am. Mostly cloudy, with a low around 61. Light and variable wind.
Friday
A 30 percent chance of showers, mainly after 2pm. Partly sunny, with a high near 80. East wind around 7 mph.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 61. Light northeast wind.
Saturday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Showers likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 60%.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Derby CT
 41.31°N 73.09°W (Elev. 115 ft)
Last Update:
2:29 pm EDT Aug 19, 2026
Forecast Valid:
2am EDT Aug 20, 2026-6pm EDT Aug 26, 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