Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Overcast

21°F

-6°C

Humidity 80%
Wind Speed N 2 mph
Barometer 30.03 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 11 Dec 8:55 am CST
Extended Forecast for

2 Miles ENE Colusa IL

  • Today

    Today: Snow, mainly after 3pm.  High near 28. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.  Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 2 inches possible.

    High: 28 °F

    Cloudy then
    Snow

  • Tonight

    Tonight: Snow, possibly mixed with freezing rain before midnight, then a slight chance of snow between midnight and 3am.  Steady temperature around 27. East wind 5 to 10 mph becoming north after midnight.  Chance of precipitation is 100%. Little or no ice accumulation expected.  New snow accumulation of around an inch possible.

    Low: 27 °F

    Wintry Mix
    then Slight
    Chance Snow

  • Friday

    Friday: Mostly cloudy, with a high near 28. Northwest wind 10 to 15 mph.

    High: 28 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Cloudy, with a low around 9. Wind chill values as low as zero. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 9 °F

    Cloudy

  • Saturday

    Saturday: Snow.  High near 13. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 13 °F

    Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around -9.

    Low: -9 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and cold, with a high near 5.

    High: 5 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -4.

    Low: -4 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

Detailed Forecast

Today
Snow, mainly after 3pm. High near 28. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Snow, possibly mixed with freezing rain before midnight, then a slight chance of snow between midnight and 3am. Steady temperature around 27. East wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 100%. Little or no ice accumulation expected. New snow accumulation of around an inch possible.
Friday
Mostly cloudy, with a high near 28. Northwest wind 10 to 15 mph.
Friday Night
Cloudy, with a low around 9. Wind chill values as low as zero. Northwest wind around 10 mph, with gusts as high as 20 mph.
Saturday
Snow. High near 13. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Saturday Night
Mostly clear, with a low around -9.
Sunday
Sunny and cold, with a high near 5.
Sunday Night
Mostly clear, with a low around -4.
Monday
Sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
Partly sunny, with a high near 43.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Colusa IL
 40.58°N 91.13°W (Elev. 617 ft)
6:46 am CST Dec 11, 2025
9am CST Dec 11, 2025-6pm CST Dec 17, 2025
 
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Additional Resources

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Hourly Weather Forecast

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