7-Day Forecast 39.79°N 91.18°W (Text-Only)
NWS Forecast for: Plainville IL
Issued by: National Weather Service Saint Louis, MO
Last Update: 10:01 pm CST Dec 5, 2025
Print


  • Overnight

    Overnight: Mostly cloudy, with a low around 26. West wind 5 to 7 mph.

    Low: 26 °F

    Mostly Cloudy



  • Saturday

    Saturday: Patchy fog between 7am and 9am.  Otherwise, mostly cloudy, with a high near 34. Light and variable wind becoming southeast 5 to 8 mph in the afternoon.

    High: 34 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday
    Night

    Saturday Night: Snow likely before 2am, then rain likely.  Cloudy, with a steady temperature around 32. Southeast wind 8 to 13 mph becoming southwest after midnight. Winds could gust as high as 22 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 32 °F

    Chance Snow
    then
    Rain/Snow
    Likely

  • Sunday

    Sunday: A chance of rain and snow before 9am, then a chance of snow between 9am and noon.  Mostly cloudy, with a temperature falling to around 24 by 5pm. West wind 9 to 11 mph becoming north in the morning. Winds could gust as high as 20 mph.  Chance of precipitation is 30%.

    High: 32 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Sunday
    Night

    Sunday Night: Mostly cloudy, with a low around 9. North wind 5 to 9 mph becoming calm  after midnight.

    Low: 9 °F

    Mostly Cloudy



  • Monday

    Monday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny



  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy



  • Tuesday

    Tuesday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny



  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of rain after midnight.  Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Overnight: Mostly cloudy, with a low around 26. West wind 5 to 7 mph.

    Saturday: Patchy fog between 7am and 9am. Otherwise, mostly cloudy, with a high near 34. Light and variable wind becoming southeast 5 to 8 mph in the afternoon.

    Saturday Night: Snow likely before 2am, then rain likely. Cloudy, with a steady temperature around 32. Southeast wind 8 to 13 mph becoming southwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Sunday: A chance of rain and snow before 9am, then a chance of snow between 9am and noon. Mostly cloudy, with a temperature falling to around 24 by 5pm. West wind 9 to 11 mph becoming north in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    Sunday Night: Mostly cloudy, with a low around 9. North wind 5 to 9 mph becoming calm after midnight.

    Monday: Mostly sunny, with a high near 28.

    Monday Night: Partly cloudy, with a low around 21.

    Tuesday: Partly sunny, with a high near 43.

    Tuesday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 33.

    Wednesday: A 20 percent chance of rain. Mostly cloudy, with a high near 40.

    Wednesday Night: Mostly cloudy, with a low around 23.

    Thursday: Mostly cloudy, with a high near 35.

    Thursday Night: Mostly cloudy, with a low around 17.

    Friday: Partly sunny, with a high near 26.



    Plainville IL
     39.79°N 91.18°W (Elev. 689 ft)

    Visit your local NWS office at: https://www.weather.gov/lsx/