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.

23°F

-5°C

Humidity 58%
Wind Speed S 9 mph
Barometer 30.19 in
Dewpoint 10°F (-12°C)
Visibility 7.00 mi
Wind Chill13°F (-11°C)
Last update 21 Jan 8:55 am EST
Extended Forecast for

Piketon OH

Winter Weather Advisory until January 21, 11:00am
Click here for hazard details and duration
...
  •  
    Winter Weather Advisory until January 21, 11:00am

    NOW until 11:00am Wed

    Winter Weather Advisory

  • Today

    High: 41 °F

    Wintry Mix
    Likely

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 29. Southwest wind around 8 mph, with gusts as high as 21 mph.

    Low: 29 °F

    Decreasing
    Clouds

  • 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 18. Light west wind.

    Low: 18 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 26. Light northwest wind increasing to 5 to 9 mph in the morning.

    High: 26 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 4.

    Low: 4 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow after 1pm. Mostly cloudy, with a high near 16. Chance of precipitation is 40%.

    High: 16 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Snow. Low around 11. Chance of precipitation is 80%.

    Low: 11 °F

    Snow

Detailed Forecast

Today
A chance of snow and freezing rain before noon, then rain and snow likely between noon and 3pm, then a chance of rain after 3pm. Cloudy, with a high near 41. Southwest wind 7 to 15 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. Total daytime snow accumulation of less than a half inch possible.
Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 29. Southwest wind around 8 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 18. Light west wind.
Friday
Mostly cloudy, with a high near 26. Light northwest wind increasing to 5 to 9 mph in the morning.
Friday Night
Mostly cloudy, with a low around 4.
Saturday
A chance of snow after 1pm. Mostly cloudy, with a high near 16. Chance of precipitation is 40%.
Saturday Night
Snow. Low around 11. Chance of precipitation is 80%.
Sunday
A chance of snow. Mostly 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:
Piketon OH
 39.07°N 83.02°W (Elev. 577 ft)
Last Update:
5:38 am EST Jan 21, 2026
Forecast Valid:
9am EST Jan 21, 2026-6pm EST Jan 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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