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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Wilmington Airport (KILG)

Lat: 39.67°NLon: 75.61°WElev: 72ft.

A Few Clouds

33°F

1°C

Humidity 58%
Wind Speed N 13 mph
Barometer 30.18 in (1022.1 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 8 Dec 5:51 am EST
Extended Forecast for

Montchanin DE

  • Today

    Today: Mostly cloudy, with a high near 31. North wind 10 to 15 mph.

    High: 31 °F

    Mostly Cloudy

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 15. North wind around 5 mph.

    Low: 15 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34. Calm wind becoming south around 5 mph in the afternoon.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29. Southwest wind 5 to 10 mph.

    Low: 29 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain and snow before 10am, then a chance of rain. Mostly cloudy, with a high near 45. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 45 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 31. North wind 10 to 15 mph.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 15. North wind around 5 mph.
Tuesday
Mostly sunny, with a high near 34. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 29. Southwest wind 5 to 10 mph.
Wednesday
A chance of rain and snow before 10am, then a chance of rain. Mostly cloudy, with a high near 45. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Wednesday Night
A slight chance of rain before 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 39.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 37.
Friday Night
A chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 50%.
Saturday
Mostly sunny, with a high near 31.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Montchanin DE
 39.8°N 75.53°W (Elev. 299 ft)
Last Update:
4:10 am EST Dec 8, 2025
Forecast Valid:
6am EST Dec 8, 2025-6pm EST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation