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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Wilmington Airport (KILG)

Lat: 39.67°NLon: 75.61°WElev: 72ft.

Partly Cloudy

71°F

22°C

Humidity 90%
Wind Speed E 6 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 22 Aug 3:51 am EDT
Extended Forecast for

New Castle DE

  • Overnight

    Overnight: A slight chance of showers. Patchy fog. Otherwise, cloudy, with a low around 67. East wind around 5 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 5pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 76. East wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers
    Likely and
    Patchy Fog

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 67. East wind around 5 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 82. West wind 5 to 10 mph.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. West wind around 5 mph.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of showers. Patchy fog. Otherwise, cloudy, with a low around 67. East wind around 5 mph. Chance of precipitation is 20%.
Saturday
Showers likely, with thunderstorms also possible after 5pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 76. East wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 67. East wind around 5 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 82. West wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 64. West wind around 5 mph.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 85.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Thursday
Showers likely. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Friday
A chance of showers. Partly sunny, with a high near 85. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New Castle DE
 39.67°N 75.59°W (Elev. 39 ft)
Last Update:
2:43 am EDT Aug 22, 2026
Forecast Valid:
4am EDT Aug 22, 2026-6pm EDT Aug 28, 2026
 
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