Risks of Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Fire Weather Concerns in Alaska and Southwest

An expansive storm system will bring widespread storms with a threat for flash flooding and severe weather to much of the central to eastern U.S. into early this week. Critical fire weather conditions are expected across interior Alaska this weekend. Elevated fire conditions also expected in the Southwest U.S.. Conditions will remain uncomfortably hot across the southern Plains and the Southeast. Read More >

Current conditions at

Wilmington Airport (KILG)

Lat: 39.67°NLon: 75.61°WElev: 72ft.

Fair

66°F

19°C

Humidity 63%
Wind Speed SW 6 mph
Barometer 29.87 in (1011.6 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 21 Jun 1:51 am EDT
Extended Forecast for

Winterthur DE

  • Overnight

    Overnight: Mostly clear, with a low around 63. West wind around 5 mph.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 84. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65. West wind 5 to 10 mph becoming light and variable  after midnight.

    Low: 65 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall.  High near 86. East wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Showers
    Likely then
    Heavy Rain

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall.  Low around 65. Southwest wind 5 to 10 mph becoming northwest after midnight.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Heavy Rain

  • Tuesday

    Tuesday: Showers likely, mainly before 11am.  Partly sunny, with a high near 80. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 80 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

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

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 63. West wind around 5 mph.
Sunday
Mostly sunny, with a high near 84. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 65. West wind 5 to 10 mph becoming light and variable after midnight.
Monday
A chance of showers, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. High near 86. East wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 65. Southwest wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers likely, mainly before 11am. Partly sunny, with a high near 80. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
A chance of showers after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
Friday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Winterthur DE
 39.78°N 75.6°W (Elev. 289 ft)
2:30 am EDT Jun 21, 2026
2am EDT Jun 21, 2026-6pm EDT Jun 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database