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

Record Heat Remains in Place This Week; Severe Thunderstorms Possible Thursday

Record warmth will persist across portions of California, the Southwest U.S., the central Great Basin and return back to areas of the central/southern Plains and mid-lower Mississippi Valley this week. Over 200 new record high temperatures are forecast. Severe thunderstorms are being outlooked on Thursday over the Midwest. Read More >

Current conditions at

Wilmington Airport (KILG)

Lat: 39.67°NLon: 75.61°WElev: 72ft.

Mostly Cloudy and Breezy

48°F

9°C

Humidity 54%
Wind Speed NW 24 G 37 mph
Barometer 30.02 in (1016.4 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 23 Mar 4:51 pm EDT
Extended Forecast for

New Castle DE

  • Tonight

    Tonight: Mostly clear, with a low around 33. North wind 10 to 15 mph.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 49. North wind 5 to 10 mph becoming light and variable in the afternoon.

    High: 49 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 36. Southwest wind around 5 mph.

    Low: 36 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 55. South wind 5 to 10 mph.

    High: 55 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 45. South wind around 10 mph.

    Low: 45 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Rain likely after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

    Low: 52 °F

    Mostly Cloudy
    then Rain
    Likely

  • Friday

    Friday: Rain likely, mainly before 8am. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.

    High: 59 °F

    Rain Likely

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 33. North wind 10 to 15 mph.
Tuesday
Sunny, with a high near 49. North wind 5 to 10 mph becoming light and variable in the afternoon.
Tuesday Night
Increasing clouds, with a low around 36. Southwest wind around 5 mph.
Wednesday
Partly sunny, with a high near 55. South wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 45. South wind around 10 mph.
Thursday
Partly sunny, with a high near 68.
Thursday Night
Rain likely after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Friday
Rain likely, mainly before 8am. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.
Friday Night
Mostly cloudy, with a low around 29.
Saturday
Sunny, with a high near 45.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 53.
Sunday Night
Partly cloudy, with a low around 38.
Monday
Mostly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Castle DE
 39.67°N 75.56°W (Elev. 3 ft)
Last Update:
4:09 pm EDT Mar 23, 2026
Forecast Valid:
5pm EDT Mar 23, 2026-6pm EDT Mar 30, 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