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

Briefing for Late June Heat Wave

An early season heat wave will bring dangerously hot and humid conditions across most of the region beginning Sunday through Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Delaware Airpark (K33N)

Lat: 39.22°NLon: 75.6°WElev: 55ft.

Fair

97°F

36°C

Humidity 50%
Wind Speed NW 5 mph
Barometer 30.08 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index110°F (43°C)
Last update 23 Jun 3:15 pm EDT
Extended Forecast for

4 Miles WNW Greenwich NJ

Extreme Heat Warning June 23, 03:40pm until June 25, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 23, 03:40pm until June 25, 08:00pm

    NOW until 8:00pm Wed

    Extreme Heat Warning

  • Tonight

    Low: 78 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming west around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 78. West wind around 5 mph becoming calm.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 96. Heat index values as high as 103. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 76. West wind around 5 mph becoming calm. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 76 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.

    Low: 71 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 78. South wind around 5 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 78. West wind around 5 mph becoming calm.
Wednesday
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 96. Heat index values as high as 103. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 76. West wind around 5 mph becoming calm. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Greenwich NJ
 39.43°N 75.43°W (Elev. 3 ft)
Last Update:
3:29 pm EDT Jun 23, 2025
Forecast Valid:
3pm EDT Jun 23, 2025-6pm EDT Jun 30, 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