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

Extreme Heat and Severe Thunderstorms Today

Extreme heat continues today from the central Plains to the lower Mississippi River Valley, over southeast Montana, and from southern California into the Southwest Deserts. Extreme Heat Warnings remain in effect. Severe thunderstorms capable of strong to severe wind gusts and large hail are possible across the Great Lakes into the Ohio Valley today into tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Wilmington Airport (KILG)

Lat: 39.67°NLon: 75.61°WElev: 72ft.

Partly Cloudy

83°F

28°C

Humidity 65%
Wind Speed SE 10 mph
Barometer 29.80 in (1009.1 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 27 Jul 2:51 pm EDT
Extended Forecast for

New Castle DE

Flood Watch July 28, 08:00am until July 29, 02:00pm
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Partly sunny, with a high near 85. South wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 71. South wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Chance
    T-storms then
    Slight Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Showers and thunderstorms. High near 81. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 81 °F

    Showers
    Likely then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms, mainly before 2am. Low around 69. South wind 5 to 10 mph becoming southwest after midnight. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 69 °F

    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 81. West wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 68. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Showers
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers after 2pm. Mostly sunny, with a high near 81. Chance of precipitation is 30%.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 8pm. Partly cloudy, with a low around 68. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Partly sunny, with a high near 85. South wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 71. South wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Showers and thunderstorms. High near 81. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Tuesday Night
Showers and thunderstorms, mainly before 2am. Low around 69. South wind 5 to 10 mph becoming southwest after midnight. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 81. West wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 68. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers after 2pm. Mostly sunny, with a high near 81. Chance of precipitation is 30%.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Friday
Sunny, with a high near 83.
Friday Night
Partly cloudy, with a low around 69.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
Mostly cloudy, with a low around 71.
Sunday
A chance of showers. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Monday
A chance of showers. Partly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New Castle DE
 39.67°N 75.56°W (Elev. 3 ft)
Last Update:
11:13 am EDT Jul 27, 2026
Forecast Valid:
3pm EDT Jul 27, 2026-6pm EDT Aug 3, 2026
 
Forecast Discussion
 
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Additional Resources

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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