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.

Overcast

13°F

-11°C

Humidity 70%
Wind Speed NE 6 mph
Barometer 30.29 in (1026.8 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 29 Jan 6:54 am CST
Extended Forecast for

Mendon IL

  • Today

    Today: Mostly cloudy and cold, with a high near 20. Northeast wind 5 to 7 mph.

    High: 20 °F

    Cold

  • Tonight

    Tonight: Mostly cloudy, with a low around 3. North wind 3 to 6 mph.

    Low: 3 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near 16. North wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 16 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around 4. Wind chill values as low as -10. Northwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 4 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny and cold, with a high near 20. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 20 °F

    Cold

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 5.

    Low: 5 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 27.

    High: 27 °F

    Chance Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy and cold, with a high near 20. Northeast wind 5 to 7 mph.
Tonight
Mostly cloudy, with a low around 3. North wind 3 to 6 mph.
Friday
Partly sunny and cold, with a high near 16. North wind 6 to 11 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 4. Wind chill values as low as -10. Northwest wind around 11 mph, with gusts as high as 20 mph.
Saturday
Sunny and cold, with a high near 20. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 5.
Sunday
A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 27.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 34.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Mostly cloudy, with a high near 33.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 22.
Wednesday
A 20 percent chance of snow. Partly sunny, with a high near 32.
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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:
4:11 am CST Jan 29, 2026
Forecast Valid:
7am CST Jan 29, 2026-6pm CST Feb 4, 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