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

10°F

-12°C

Humidity 69%
Wind Speed NW 9 mph
Barometer 30.19 in (1023.5 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill-3°F (-19°C)
Last update 17 Mar 4:54 am CDT
Extended Forecast for

Mendon IL

  • Today

    Today: Increasing clouds, with a high near 29. Northwest wind 6 to 10 mph becoming south in the afternoon.

    High: 29 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Snow likely, mainly before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 27. Southeast wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 27 °F

    Snow Likely
    then Chance
    Snow

  • Wednesday

    Wednesday: Sunny, with a high near 57. South wind 7 to 10 mph becoming west in the afternoon.

    High: 57 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40. Light and variable wind becoming south 5 to 7 mph in the evening.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70. South wind around 8 mph becoming northwest in the afternoon.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 29. Northwest wind 6 to 10 mph becoming south in the afternoon.
Tonight
Snow likely, mainly before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 27. Southeast wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Wednesday
Sunny, with a high near 57. South wind 7 to 10 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 40. Light and variable wind becoming south 5 to 7 mph in the evening.
Thursday
Mostly sunny, with a high near 70. South wind around 8 mph becoming northwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Partly sunny, with a high near 52.
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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:
3:31 am CDT Mar 17, 2026
Forecast Valid:
5am CDT Mar 17, 2026-6pm CDT Mar 23, 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