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

74°F

23°C

Humidity 26%
Wind Speed W 15 G 25 mph
Barometer 29.74 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 9 May 12:35 pm CDT
Extended Forecast for

Monmouth IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 79. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 79 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 45. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 67. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 42. Northwest wind around 5 mph becoming calm in the evening.

    Low: 42 °F

    Increasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers before 1pm. Mostly sunny, with a high near 79. Breezy.

    High: 79 °F

    Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 79. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 45. North wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 67. North wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Increasing clouds, with a low around 42. Northwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 47.
Tuesday
A 40 percent chance of showers before 1pm. Mostly sunny, with a high near 79. Breezy.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 55.
Friday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monmouth IL
 40.9°N 90.65°W (Elev. 774 ft)
Last Update:
1:16 pm CDT May 9, 2026
Forecast Valid:
1pm CDT May 9, 2026-6pm CDT May 15, 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