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

87°F

31°C

Humidity 65%
Wind Speed SW 13 G 21 mph
Barometer 29.85 in (1010.8 mb)
Dewpoint 74°F (23°C)
Visibility 8.00 mi
Heat Index95°F (35°C)
Last update 17 Aug 2:53 pm EDT
Extended Forecast for

Derby CT

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 91. Heat index values as high as 99. Southwest wind around 8 mph.

    High: 91 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 63. Southwest wind 5 to 11 mph becoming north after midnight. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    Showers

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 77. Northeast wind 8 to 11 mph.

    High: 77 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. Southeast wind around 6 mph.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Northeast wind 6 to 9 mph becoming southeast in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 91. Heat index values as high as 99. Southwest wind around 8 mph.
Tonight
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 63. Southwest wind 5 to 11 mph becoming north after midnight. Chance of precipitation is 40%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 77. Northeast wind 8 to 11 mph.
Monday Night
Partly cloudy, with a low around 56. Southeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 76. Northeast wind 6 to 9 mph becoming southeast in the afternoon.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 85.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 66.
Sunday
A chance of showers. Partly sunny, with a high near 83.
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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:
2:04 pm EDT Aug 17, 2025
Forecast Valid:
3pm EDT Aug 17, 2025-6pm EDT Aug 24, 2025
 
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