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

Quincy Regional Airport-Baldwin Field (KUIN)

Lat: 39.94°NLon: 91.2°WElev: 759ft.

Fair

24°F

-4°C

Humidity 50%
Wind Speed S 3 mph
Barometer 30.36 in (1029.4 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 23 Feb 7:54 pm CST
Extended Forecast for

Mendon IL

  • Tonight

    Tonight: Partly cloudy, with a low around 19. South wind 5 to 11 mph.

    Low: 19 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 53. Breezy, with a south wind 13 to 21 mph becoming west in the afternoon. Winds could gust as high as 36 mph.

    High: 53 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28. West wind 7 to 11 mph becoming north after midnight. Winds could gust as high as 20 mph.

    Low: 28 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Increasing clouds, with a high near 46. North wind around 7 mph becoming northeast in the afternoon.

    High: 46 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Rain likely before 9pm, then rain and snow likely between 9pm and 3am, then rain likely after 3am. Mostly cloudy, with a low around 31. East wind 6 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 19. South wind 5 to 11 mph.
Tuesday
Mostly cloudy, with a high near 53. Breezy, with a south wind 13 to 21 mph becoming west in the afternoon. Winds could gust as high as 36 mph.
Tuesday Night
Mostly cloudy, with a low around 28. West wind 7 to 11 mph becoming north after midnight. Winds could gust as high as 20 mph.
Wednesday
Increasing clouds, with a high near 46. North wind around 7 mph becoming northeast in the afternoon.
Wednesday Night
Rain likely before 9pm, then rain and snow likely between 9pm and 3am, then rain likely after 3am. Mostly cloudy, with a low around 31. East wind 6 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
Mostly sunny, with a high near 47.
Thursday Night
Mostly clear, with a low around 32.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 37.
Saturday
Sunny, with a high near 55.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 40%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 40%.
Monday
A slight chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendon IL
 40.08°N 91.29°W (Elev. 702 ft)
Last Update:
7:56 pm CST Feb 23, 2026
Forecast Valid:
8pm CST Feb 23, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation