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

Hazardous Weather Conditions

Current conditions at

New Haven, Tweed-New Haven Airport (KHVN)

Lat: 41.26°NLon: 72.89°WElev: 13ft.

Fog/Mist

74°F

23°C

Humidity 94%
Wind Speed Calm
Barometer 30.05 in (1017.5 mb)
Dewpoint 72°F (22°C)
Visibility 3.00 mi
Last update 24 Jun 4:53 am EDT
Extended Forecast for

Derby CT

Extreme Heat Warning June 24, 05:51am until June 24, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 24, 05:51am until June 24, 08:00pm

    NOW until 8:00pm Tue

    Extreme Heat Warning

  • Today

    High: 101 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 76. Northwest wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Heat index values as high as 102. Northwest wind 3 to 7 mph.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Light northeast wind.

    Low: 70 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 75. East wind 6 to 9 mph. Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 72.

    High: 72 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny and hot, with a high near 101. Heat index values as high as 108. Calm wind becoming west 5 to 8 mph in the morning.
Tonight
Mostly clear, with a low around 76. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Heat index values as high as 102. Northwest wind 3 to 7 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Light northeast wind.
Thursday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 75. East wind 6 to 9 mph. Chance of precipitation is 40%.
Thursday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 60.
Friday
Mostly cloudy, with a high near 72.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 62.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 77.
Saturday Night
A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 67.
Sunday
Partly sunny, with a high near 84.
Sunday Night
Mostly cloudy, with a low around 68.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 89.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Derby CT
 41.34°N 73.09°W (Elev. 118 ft)
Last Update:
3:07 am EDT Jun 24, 2025
Forecast Valid:
5am EDT Jun 24, 2025-6pm EDT Jun 30, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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