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

Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Hazardous Weather Conditions

Current conditions at

Chillicothe Ross County Airport (KRZT)

Lat: 39.44°NLon: 83.02°WElev: 725ft.

18°F

-8°C

Humidity 53%
Wind Speed S 6 mph
Barometer 30.34 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 21 Jan 2:35 am EST
Extended Forecast for

McDermott OH

  • Overnight

    Overnight: Partly cloudy, with a low around 16. South wind 3 to 5 mph.

    Low: 16 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Rain and snow likely before 4pm, then a chance of rain. Increasing clouds, with a high near 41. Southwest wind 6 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 41 °F

    Chance Snow
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31. Southwest wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 39. West wind 6 to 8 mph.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 21. Light west wind.

    Low: 21 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 27.

    High: 27 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 6.

    Low: 6 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow after 1pm. Cloudy, with a high near 16. Chance of precipitation is 50%.

    High: 16 °F

    Cloudy then
    Chance Snow

  • Saturday Night

    Saturday Night: Snow. Low around 12. Chance of precipitation is 80%.

    Low: 12 °F

    Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 16. South wind 3 to 5 mph.
Wednesday
Rain and snow likely before 4pm, then a chance of rain. Increasing clouds, with a high near 41. Southwest wind 6 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
Mostly cloudy, with a low around 31. Southwest wind 7 to 9 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 39. West wind 6 to 8 mph.
Thursday Night
Mostly cloudy, with a low around 21. Light west wind.
Friday
Mostly cloudy, with a high near 27.
Friday Night
Mostly cloudy, with a low around 6.
Saturday
A chance of snow after 1pm. Cloudy, with a high near 16. Chance of precipitation is 50%.
Saturday Night
Snow. Low around 12. Chance of precipitation is 80%.
Sunday
A chance of snow. Cloudy, with a high near 23. Chance of precipitation is 50%.
Sunday Night
Mostly cloudy, with a low around 6.
Monday
Mostly sunny, with a high near 22.
Monday Night
Mostly clear, with a low around 4.
Tuesday
Mostly sunny, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
McDermott OH
 38.83°N 83.07°W (Elev. 712 ft)
Last Update:
12:28 am EST Jan 21, 2026
Forecast Valid:
2am EST Jan 21, 2026-6pm EST Jan 27, 2026
 
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