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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

Wilmington Airport (KILG)

Lat: 39.67°NLon: 75.61°WElev: 72ft.

Partly Cloudy

79°F

26°C

Humidity 60%
Wind Speed S 13 mph
Barometer 29.78 in (1008.3 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 17 Jun 12:51 pm EDT
Extended Forecast for

Montchanin DE

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms between 2pm and 3pm. Sunny, with a high near 83. South wind around 10 mph. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Increasing clouds, with a low around 67. South wind 5 to 10 mph.

    Low: 67 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A slight chance of showers before noon, then a chance of showers and thunderstorms after 2pm. Cloudy through mid morning, then gradual clearing, with a high near 92. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Breezy.
    Slight Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 67. West wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 83. West wind around 10 mph, with gusts as high as 20 mph.

    High: 83 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 62.

    Low: 62 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms between 2pm and 3pm. Sunny, with a high near 83. South wind around 10 mph. Chance of precipitation is 20%.
Tonight
Increasing clouds, with a low around 67. South wind 5 to 10 mph.
Thursday
A slight chance of showers before noon, then a chance of showers and thunderstorms after 2pm. Cloudy through mid morning, then gradual clearing, with a high near 92. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Partly cloudy, with a low around 67. West wind 10 to 15 mph, with gusts as high as 25 mph.
Juneteenth
Mostly sunny, with a high near 83. West wind around 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 61.
Saturday
Sunny, with a high near 80.
Saturday Night
Clear, with a low around 62.
Sunday
Sunny, with a high near 84.
Sunday Night
A chance of showers after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
Tuesday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Montchanin DE
 39.8°N 75.53°W (Elev. 299 ft)
Last Update:
12:37 pm EDT Jun 17, 2026
Forecast Valid:
1pm EDT Jun 17, 2026-6pm EDT Jun 23, 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