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

Galesburg Municipal Airport (KGBG)

Lat: 40.93°NLon: 90.43°WElev: 751ft.

Fair

20°F

-7°C

Humidity 91%
Wind Speed SE 7 mph
Barometer 30.16 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 8 Dec 7:35 pm CST
Extended Forecast for

Monmouth IL

  • Tonight

    Tonight: Mostly cloudy, with a temperature rising to around 29 by 3am. South wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 20 °F⇑

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after 5pm. Mostly cloudy, with a high near 38. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 38 °F

    Partly Sunny
    then Slight
    Chance Rain
    and Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain before 3am, then a chance of showers after 3am. Cloudy, with a low around 30. Windy, with a southwest wind 20 to 30 mph becoming west after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 50%.

    Low: 30 °F

    Chance Rain
    and Windy

  • Wednesday

    Wednesday: A slight chance of rain and snow showers before 9am, then a slight chance of snow showers. Mostly cloudy, with a high near 35. Windy, with a northwest wind 25 to 30 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 20%.

    High: 35 °F

    Slight Chance
    Rain/Snow and
    Windy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow. Mostly cloudy, with a high near 27.

    High: 27 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Chance Snow

  • Friday

    Friday: Mostly cloudy, with a high near 24.

    High: 24 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 1.

    Low: 1 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a temperature rising to around 29 by 3am. South wind 10 to 15 mph, with gusts as high as 30 mph.
Tuesday
A 20 percent chance of rain after 5pm. Mostly cloudy, with a high near 38. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.
Tuesday Night
A chance of rain before 3am, then a chance of showers after 3am. Cloudy, with a low around 30. Windy, with a southwest wind 20 to 30 mph becoming west after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 50%.
Wednesday
A slight chance of rain and snow showers before 9am, then a slight chance of snow showers. Mostly cloudy, with a high near 35. Windy, with a northwest wind 25 to 30 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 16.
Thursday
A 30 percent chance of snow. Mostly cloudy, with a high near 27.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 15.
Friday
Mostly cloudy, with a high near 24.
Friday Night
Mostly cloudy, with a low around 1.
Saturday
Mostly cloudy and cold, with a high near 10.
Saturday Night
Mostly cloudy, with a low around -1.
Sunday
Mostly sunny, with a high near 17.
Sunday Night
Mostly cloudy, with a low around 7.
Monday
Partly sunny, with a high near 28.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Monmouth IL
 40.9°N 90.65°W (Elev. 774 ft)
Last Update:
3:16 pm CST Dec 8, 2025
Forecast Valid:
7pm CST Dec 8, 2025-6pm CST Dec 15, 2025
 
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