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

68°F

20°C

Humidity 61%
Wind Speed SW 3 mph
Barometer 29.91 in (1012.5 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 15 Jun 8:54 pm CDT
Extended Forecast for

Mendon IL

  • Tonight

    Tonight: Mostly clear, with a low around 60. South wind 5 to 11 mph, with gusts as high as 22 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 9am. Partly sunny, then gradually becoming sunny, with a high near 80. Southwest wind 14 to 16 mph becoming west in the afternoon. Winds could gust as high as 26 mph.

    High: 80 °F

    Chance
    Showers then
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59. Northwest wind 6 to 11 mph becoming light and variable. Winds could gust as high as 20 mph.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 86. Breezy, with a south wind 14 to 24 mph, with gusts as high as 40 mph. Chance of precipitation is 90%.

    High: 86 °F

    Breezy.
    Showers
    Likely then
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 64. Breezy, with a southwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 60%.

    Low: 64 °F

    T-storms
    Likely and
    Breezy then
    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 60. South wind 5 to 11 mph, with gusts as high as 22 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 9am. Partly sunny, then gradually becoming sunny, with a high near 80. Southwest wind 14 to 16 mph becoming west in the afternoon. Winds could gust as high as 26 mph.
Tuesday Night
Partly cloudy, with a low around 59. Northwest wind 6 to 11 mph becoming light and variable. Winds could gust as high as 20 mph.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 86. Breezy, with a south wind 14 to 24 mph, with gusts as high as 40 mph. Chance of precipitation is 90%.
Wednesday Night
Showers and thunderstorms likely before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 64. Breezy, with a southwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 57.
Juneteenth
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 61.
Saturday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Sunday
Showers and thunderstorms likely. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Mendon IL
 40.1°N 91.29°W (Elev. 699 ft)
Last Update:
9:31 pm CDT Jun 15, 2026
Forecast Valid:
9pm CDT Jun 15, 2026-6pm CDT Jun 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation