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

56°F

13°C

Humidity 57%
Wind Speed SW 13 mph
Barometer 30.02 in (1016.4 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 21 Apr 4:54 am CDT
Extended Forecast for

Mendon IL

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 79. Breezy, with a southwest wind 13 to 20 mph, with gusts as high as 32 mph.

    High: 79 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 58. Southwest wind 13 to 15 mph, with gusts as high as 26 mph.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. South wind around 10 mph, with gusts as high as 20 mph.

    High: 77 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. South wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. South wind 13 to 18 mph, with gusts as high as 31 mph.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 60. Chance of precipitation is 90%.

    Low: 60 °F

    Chance
    T-storms then
    Showers

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 73.

    High: 73 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 51. Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 79. Breezy, with a southwest wind 13 to 20 mph, with gusts as high as 32 mph.
Tonight
Partly cloudy, with a low around 58. Southwest wind 13 to 15 mph, with gusts as high as 26 mph.
Wednesday
Mostly sunny, with a high near 77. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 59. South wind 8 to 10 mph, with gusts as high as 20 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. South wind 13 to 18 mph, with gusts as high as 31 mph.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 60. Chance of precipitation is 90%.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 73.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 51. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 71.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 50.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 71.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Monday
Showers and thunderstorms likely. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
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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:
3:01 am CDT Apr 21, 2026
Forecast Valid:
5am CDT Apr 21, 2026-6pm CDT Apr 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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