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

43°F

6°C

Humidity 71%
Wind Speed SW 8 mph
Barometer 30.20 in (1022.8 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 19 Apr 7:54 am CDT
Extended Forecast for

Mendon IL

  • Today

    Today: Increasing clouds, with a high near 62. West wind 9 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph.

    High: 62 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 35. North wind 6 to 10 mph becoming east after midnight.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 65. East wind 6 to 11 mph.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. South wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 56. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Increasing clouds, with a high near 62. West wind 9 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph.
Tonight
Mostly clear, with a low around 35. North wind 6 to 10 mph becoming east after midnight.
Monday
Sunny, with a high near 65. East wind 6 to 11 mph.
Monday Night
Mostly clear, with a low around 52. South wind 10 to 14 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 78. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 56. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82.
Thursday Night
Showers and possibly a thunderstorm. Low around 59. Chance of precipitation is 80%.
Friday
Showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
Friday Night
A 40 percent chance of showers. Partly cloudy, with a low around 45.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 67.
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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:
7:36 am CDT Apr 19, 2026
Forecast Valid:
8am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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