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

37°F

3°C

Humidity 46%
Wind Speed Calm
Barometer 30.50 in (1032.7 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 15 Mar 9:53 am EDT
Extended Forecast for

Derby CT

  • Today

    Today: Partly sunny, with a high near 46. Light east wind becoming southeast 5 to 10 mph in the afternoon.

    High: 46 °F

    Partly Sunny

  • Tonight

    Tonight: Showers and possibly a thunderstorm, mainly after 5am. Patchy fog after 2am. Low around 36. Southeast wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 36 °F

    Mostly Cloudy
    then Showers
    and Patchy
    Fog

  • Monday

    Monday: Intermittent showers and thunderstorms. Patchy fog before noon. Otherwise, cloudy, with a high near 60. South wind 14 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 50%.

    High: 60 °F

    Intermittent
    T-storms and
    Patchy Fog

  • Monday Night

    Monday Night: Periods of showers and possibly a thunderstorm before 2am, then showers likely. Some of the storms could produce heavy rainfall. Low around 35. Breezy, with a south wind 17 to 23 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 35 °F

    Heavy Rain
    and Breezy

  • Tuesday

    Tuesday: Showers likely before 8am. Mostly cloudy through mid morning, then becoming sunny, with a steady temperature around 39. West wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    High: 39 °F

    Showers
    Likely then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming clear, with a low around 22.

    Low: 22 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Increasing clouds, with a high near 40.

    High: 40 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 46. Light east wind becoming southeast 5 to 10 mph in the afternoon.
Tonight
Showers and possibly a thunderstorm, mainly after 5am. Patchy fog after 2am. Low around 36. Southeast wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Intermittent showers and thunderstorms. Patchy fog before noon. Otherwise, cloudy, with a high near 60. South wind 14 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 50%.
Monday Night
Periods of showers and possibly a thunderstorm before 2am, then showers likely. Some of the storms could produce heavy rainfall. Low around 35. Breezy, with a south wind 17 to 23 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
Showers likely before 8am. Mostly cloudy through mid morning, then becoming sunny, with a steady temperature around 39. West wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Tuesday Night
Mostly cloudy, then gradually becoming clear, with a low around 22.
Wednesday
Increasing clouds, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Partly sunny, with a high near 47.
Thursday Night
Mostly cloudy, with a low around 31.
Friday
Mostly sunny, with a high near 52.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.
Saturday
A chance of rain and snow. Partly sunny, with a high near 50. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Derby CT
 41.34°N 73.09°W (Elev. 118 ft)
Last Update:
6:56 am EDT Mar 15, 2026
Forecast Valid:
10am EDT Mar 15, 2026-6pm EDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation