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

79°F

26°C

Humidity 69%
Wind Speed NW 6 mph
Barometer 29.87 in (1010.8 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 13 Oct 9:54 pm CDT
Extended Forecast for

Mendon IL

  • Tonight

    Tonight: Showers and thunderstorms likely. Cloudy, with a low around 66. Northwest wind 5 to 7 mph becoming northeast after midnight. Chance of precipitation is 70%.

    Low: 66 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Cloudy, with a high near 71. North wind 7 to 9 mph. Chance of precipitation is 50%.

    High: 71 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 61. East wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 2pm, then showers likely between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Patchy fog between 8am and noon. High near 73. East wind 7 to 9 mph becoming west in the afternoon. Chance of precipitation is 90%.

    High: 73 °F

    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 48. Breezy, with a northwest wind 11 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.

    Low: 48 °F

    Chance
    T-storms then
    Chance
    Showers and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 58. Breezy.

    High: 58 °F

    Mostly Sunny
    and Breezy

  • Friday Night

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

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

Detailed Forecast

Tonight
Showers and thunderstorms likely. Cloudy, with a low around 66. Northwest wind 5 to 7 mph becoming northeast after midnight. Chance of precipitation is 70%.
Wednesday
A chance of showers and thunderstorms. Cloudy, with a high near 71. North wind 7 to 9 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 61. East wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Thursday
Showers and possibly a thunderstorm before 2pm, then showers likely between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Patchy fog between 8am and noon. High near 73. East wind 7 to 9 mph becoming west in the afternoon. Chance of precipitation is 90%.
Thursday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 48. Breezy, with a northwest wind 11 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 58. Breezy.
Friday Night
Mostly clear, with a low around 37.
Saturday
Sunny, with a high near 62.
Saturday Night
Clear, with a low around 43.
Sunday
Sunny, with a high near 68.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 50.
Monday
Partly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mendon IL
 40.08°N 91.29°W (Elev. 702 ft)
Last Update:
10:41 pm CDT Oct 13, 2026
Forecast Valid:
10pm CDT Oct 13, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation