Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Hazardous Weather Conditions

Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

Overcast

13°F

-11°C

Humidity 64%
Wind Speed S 6 mph
Barometer 30.31 in (1028.1 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 20 Jan 3:53 am CST
Extended Forecast for

3 Miles S Gibson IA

  • Overnight

    Overnight: Partly cloudy, with a low around 5. Wind chill values as low as zero. South wind around 5 mph.

    Low: 5 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 26. Wind chill values as low as zero. South wind 5 to 10 mph becoming southeast in the afternoon.

    High: 26 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of snow between 8pm and 1am.  Mostly cloudy, with a low around 16. East wind around 10 mph becoming west after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 16 °F

    Chance Snow
    then Slight
    Chance Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow showers after noon.  Patchy blowing snow after 4pm. Mostly sunny, with a high near 34. Breezy, with a west wind 10 to 20 mph, with gusts as high as 35 mph.

    High: 34 °F

    Chance Snow
    Showers and
    Patchy
    Blowing Snow

  • Wednesday Night

    Wednesday Night: Patchy blowing snow before midnight. Partly cloudy, with a low around 11.

    Low: 11 °F

    Patchy
    Blowing Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -8.

    Low: -8 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near 0.

    High: 0 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -9.

    Low: -9 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 5. Wind chill values as low as zero. South wind around 5 mph.
Tuesday
Increasing clouds, with a high near 26. Wind chill values as low as zero. South wind 5 to 10 mph becoming southeast in the afternoon.
Tuesday Night
A chance of snow between 8pm and 1am. Mostly cloudy, with a low around 16. East wind around 10 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Wednesday
A 30 percent chance of snow showers after noon. Patchy blowing snow after 4pm. Mostly sunny, with a high near 34. Breezy, with a west wind 10 to 20 mph, with gusts as high as 35 mph.
Wednesday Night
Patchy blowing snow before midnight. Partly cloudy, with a low around 11.
Thursday
Mostly sunny, with a high near 27.
Thursday Night
Mostly cloudy, with a low around -8.
Friday
Mostly sunny and cold, with a high near 0.
Friday Night
Mostly cloudy, with a low around -9.
Saturday
Mostly cloudy and cold, with a high near 5.
Saturday Night
Mostly cloudy, with a low around -4.
Sunday
Mostly sunny, with a high near 19.
Sunday Night
Partly cloudy, with a low around 0.
Monday
Sunny, with a high near 24.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Gibson IA
 41.44°N 92.41°W (Elev. 869 ft)
3:16 am CST Jan 20, 2026
3am CST Jan 20, 2026-6pm CST Jan 26, 2026
 
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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