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, Chillicothe Agri-Science Center (KCDJ)

Lat: 39.82°NLon: 93.58°WElev: 768ft.

40°F

4°C

Humidity 41%
Wind Speed SW 9 mph
Barometer 30.02 in (1017.9 mb)
Dewpoint 18°F (-8°C)
Visibility NA
Wind Chill34°F (1°C)
Last update 20 Jan 11:51 pm CST
Extended Forecast for

Mendon MO

  • Overnight

    Overnight: A chance of flurries before 3am.  Cloudy, then gradually becoming partly cloudy, with a low around 23. Southwest wind 9 to 11 mph becoming west northwest. Winds could gust as high as 23 mph.

    Low: 23 °F

    Chance
    Flurries

  • Wednesday

    Wednesday: Sunny, with a high near 42. Northwest wind 8 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 42 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 18. West wind 8 to 13 mph becoming light and variable  after midnight. Winds could gust as high as 23 mph.

    Low: 18 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 33. Calm wind becoming northwest around 6 mph.

    High: 33 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 3. Light north wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 23 mph.

    Low: 3 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 9.

    High: 9 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -3.

    Low: -3 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow.  Mostly cloudy and cold, with a high near 11. Chance of precipitation is 40%.

    High: 11 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 1.

    Low: 1 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of flurries before 3am. Cloudy, then gradually becoming partly cloudy, with a low around 23. Southwest wind 9 to 11 mph becoming west northwest. Winds could gust as high as 23 mph.
Wednesday
Sunny, with a high near 42. Northwest wind 8 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 18. West wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.
Thursday
Partly sunny, with a high near 33. Calm wind becoming northwest around 6 mph.
Thursday Night
Mostly cloudy, with a low around 3. Light north wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 23 mph.
Friday
Mostly cloudy and cold, with a high near 9.
Friday Night
Mostly cloudy, with a low around -3.
Saturday
A chance of snow. Mostly cloudy and cold, with a high near 11. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 1.
Sunday
Mostly sunny, with a high near 19.
Sunday Night
Partly cloudy, with a low around 0.
Monday
Mostly sunny, with a high near 24.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Mostly sunny, with a high near 34.
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ABOUT THIS FORECAST

 
Point Forecast:
Mendon MO
 39.58°N 93.14°W (Elev. 679 ft)
9:22 pm CST Jan 20, 2026
12am CST Jan 21, 2026-6pm CST Jan 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database