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

44°F

7°C

Humidity 55%
Wind Speed E 7 mph
Barometer 30.29 in (1025.8 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 20 Apr 12:54 am CDT
Extended Forecast for

Mendon IL

  • Overnight

    Overnight: Mostly clear, with a low around 35. East wind around 6 mph.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 67. East wind 6 to 11 mph becoming south in the afternoon.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. South wind 10 to 13 mph, with gusts as high as 24 mph.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Southwest wind 13 to 18 mph, with gusts as high as 28 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81. Breezy.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 58. Chance of precipitation is 90%.

    Low: 58 °F

    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 35. East wind around 6 mph.
Monday
Sunny, with a high near 67. East wind 6 to 11 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 53. South wind 10 to 13 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 79. Southwest wind 13 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
Partly cloudy, with a low around 59. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81. Breezy.
Thursday Night
Showers and possibly a thunderstorm. Low around 58. Chance of precipitation is 90%.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 70.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 48.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 67.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 46.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 66.
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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:
12:41 am CDT Apr 20, 2026
Forecast Valid:
1am CDT Apr 20, 2026-6pm CDT Apr 26, 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