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.

27°F

-3°C

Humidity 61%
Wind Speed NW 7 mph
Barometer 30.12 in (1021.3 mb)
Dewpoint 15°F (-9°C)
Visibility NA
Wind Chill19°F (-7°C)
Last update 21 Jan 6:51 am CST
Extended Forecast for

Mendon MO

  • Today

    Today: Sunny, with a high near 42. Breezy, with a west southwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 42 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 19. West wind 9 to 14 mph becoming light northwest  after midnight. Winds could gust as high as 31 mph.

    Low: 19 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 37. Calm wind becoming west southwest around 6 mph.

    High: 37 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 2. Wind chill values between -10 and zero. Light north northwest wind becoming north 10 to 15 mph in the evening. Winds could gust as high as 24 mph.

    Low: 2 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 9. North northeast wind 11 to 15 mph, with gusts as high as 24 mph.

    High: 9 °F

    Cold

  • Friday Night

    Friday Night: A slight chance of snow.  Cloudy, with a low around -4. Chance of precipitation is 20%.

    Low: -4 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A chance of snow.  Mostly cloudy and cold, with a high near 9. Chance of precipitation is 50%.

    High: 9 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A chance of snow before midnight.  Mostly cloudy, with a low around 1. Chance of precipitation is 30%.

    Low: 1 °F

    Chance Snow
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 18.

    High: 18 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 42. Breezy, with a west southwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 34 mph.
Tonight
Mostly clear, with a low around 19. West wind 9 to 14 mph becoming light northwest after midnight. Winds could gust as high as 31 mph.
Thursday
Partly sunny, with a high near 37. Calm wind becoming west southwest around 6 mph.
Thursday Night
Mostly cloudy, with a low around 2. Wind chill values between -10 and zero. Light north northwest wind becoming north 10 to 15 mph in the evening. Winds could gust as high as 24 mph.
Friday
Mostly cloudy and cold, with a high near 9. North northeast wind 11 to 15 mph, with gusts as high as 24 mph.
Friday Night
A slight chance of snow. Cloudy, with a low around -4. Chance of precipitation is 20%.
Saturday
A chance of snow. Mostly cloudy and cold, with a high near 9. Chance of precipitation is 50%.
Saturday Night
A chance of snow before midnight. Mostly cloudy, with a low around 1. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 18.
Sunday Night
Mostly clear, with a low around -1.
Monday
Sunny, with a high near 22.
Monday Night
Mostly clear, with a low around 9.
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)
5:22 am CST Jan 21, 2026
7am CST Jan 21, 2026-6pm CST Jan 27, 2026
 
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Additional Resources

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Hourly Weather Forecast

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