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

Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Wilmington Airport (KILG)

Lat: 39.67°NLon: 75.61°WElev: 72ft.

Fair

68°F

20°C

Humidity 96%
Wind Speed Calm
Barometer 29.91 in (1012.7 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 19 Aug 4:51 am EDT
Extended Forecast for

Montchanin DE

  • Today

    Today: Sunny, with a high near 86. North wind 5 to 10 mph becoming west in the morning.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 69. West wind around 5 mph becoming calm.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 82. Northeast wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 82 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 64. North wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 64 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers after 2pm. Mostly sunny, with a high near 83. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 20%.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before 8pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Mostly cloudy, with a high near 81. Chance of precipitation is 50%.

    High: 81 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 86. North wind 5 to 10 mph becoming west in the morning.
Tonight
Partly cloudy, with a low around 69. West wind around 5 mph becoming calm.
Thursday
Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 82. Northeast wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers likely, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 64. North wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
A slight chance of showers after 2pm. Mostly sunny, with a high near 83. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 20%.
Friday Night
A slight chance of showers before 8pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers. Mostly cloudy, with a high near 81. Chance of precipitation is 50%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 83.
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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:
4:20 am EDT Aug 19, 2026
Forecast Valid:
5am EDT Aug 19, 2026-6pm EDT Aug 25, 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