National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Rapid Warm-Up Forecast Across Much of the Lower 48 Today and Tuesday

Most of the U.S. starts the week calm and unseasonably warm. The Heartland will be warmest, with highs 25–30° above average. Only the Gulf Coast stays chilly. Rain today is limited to western Washington while lake effect snow continues east of Lake Ontario. Cooler air returns after Tuesday, bringing a wintry mix to the Midwest and Northeast by Wednesday. Read More >

Current conditions at

Galesburg Municipal Airport (KGBG)

Lat: 40.93°NLon: 90.43°WElev: 751ft.

Fair

39°F

4°C

Humidity 89%
Wind Speed SW 3 mph
Barometer 30.12 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 12 Jan 4:15 pm CST
Extended Forecast for

Monmouth IL

  • This Afternoon

    This Afternoon: Sunny, with a steady temperature around 40. Southwest wind around 5 mph.

    High: 40 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 35. Southwest wind 5 to 10 mph, with gusts as high as 25 mph.

    Low: 35 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Isolated showers after 5pm. Mostly cloudy, with a high near 50. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 50 °F

    Partly Sunny
    then Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 29 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Blustery

  • Wednesday

    Wednesday: Partly sunny, with a high near 30. Blustery.

    High: 30 °F

    Partly Sunny
    and Blustery

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 13. Blustery.

    Low: 13 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 24. Chance of precipitation is 60%.

    Low: 24 °F

    Snow Likely
    then Chance
    Snow

  • Friday

    Friday: A 40 percent chance of snow after noon. Mostly cloudy, with a high near 36.

    High: 36 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

This Afternoon
Sunny, with a steady temperature around 40. Southwest wind around 5 mph.
Tonight
Increasing clouds, with a low around 35. Southwest wind 5 to 10 mph, with gusts as high as 25 mph.
Tuesday
Isolated showers after 5pm. Mostly cloudy, with a high near 50. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 29. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Wednesday
Partly sunny, with a high near 30. Blustery.
Wednesday Night
Mostly clear, with a low around 13. Blustery.
Thursday
Mostly sunny, with a high near 28.
Thursday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 24. Chance of precipitation is 60%.
Friday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 36.
Friday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 13.
Saturday
Mostly cloudy, with a high near 19.
Saturday Night
Mostly cloudy, with a low around 4.
Sunday
Partly sunny, with a high near 18.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monmouth IL
 40.92°N 90.65°W (Elev. 751 ft)
Last Update:
3:16 pm CST Jan 12, 2026
Forecast Valid:
4pm CST Jan 12, 2026-6pm CST Jan 18, 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