Briefing for Heat, Severe Storm, and Flash Flood Risks through Thursday

Dangerously hot and humid conditions are expected through Wednesday. There is also a threat of isolated severe thunderstorms on Wednesday. Flash flooding from locally heavy rainfall is possible on Thursday. See this briefing for details on these hazards. Read More >

Hazardous Weather Conditions

Current conditions at

Georgetown - Delaware Coastal Airport (KGED)

Lat: 38.69°NLon: 75.36°WElev: 46ft.

Mostly Cloudy

91°F

33°C

Humidity 52%
Wind Speed N 3 mph
Barometer 30.02 in (1016.4 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 29 Jul 12:54 pm EDT
Extended Forecast for

Nassau DE

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 94. Heat index values as high as 101. East wind around 5 mph.

    High: 94 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 74. Southwest wind around 5 mph.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94. Heat index values as high as 103. South wind 5 to 10 mph.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74. South wind around 5 mph.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 11am.  Partly sunny, with a high near 89. Southeast wind 5 to 15 mph.  Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Some of the storms could produce heavy rainfall.  Mostly cloudy, with a low around 71. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 71 °F

    Heavy Rain

  • Friday

    Friday: Showers likely, mainly before 2pm.  Mostly cloudy, with a high near 79. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers before 8pm.  Mostly cloudy, with a low around 67. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 94. Heat index values as high as 101. East wind around 5 mph.
Tonight
Mostly clear, with a low around 74. Southwest wind around 5 mph.
Wednesday
Sunny, with a high near 94. Heat index values as high as 103. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 74. South wind around 5 mph.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 89. Southeast wind 5 to 15 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 71. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Friday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Nassau DE
 38.76°N 75.21°W (Elev. 10 ft)
4:11 am EDT Jul 29, 2025
1pm EDT Jul 29, 2025-6pm EDT Aug 4, 2025
 
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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