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

42°F

6°C

Humidity 74%
Wind Speed E 3 mph
Barometer 29.98 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 14 Feb 8:35 pm CST
Extended Forecast for

Monmouth IL

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 35. Southeast wind around 5 mph becoming calm in the evening.

    Low: 35 °F

    Cloudy then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 60. Northwest wind 5 to 10 mph.

    High: 60 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 40. Light and variable wind becoming south 5 to 10 mph in the evening.

    Low: 40 °F

    Increasing
    Clouds

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 64. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 64 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 66. Breezy.

    High: 66 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 35. Southeast wind around 5 mph becoming calm in the evening.
Sunday
Patchy fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 60. Northwest wind 5 to 10 mph.
Sunday Night
Increasing clouds, with a low around 40. Light and variable wind becoming south 5 to 10 mph in the evening.
Washington's Birthday
Partly sunny, with a high near 64. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 44.
Tuesday
Partly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Sunny, with a high near 66. Breezy.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 57.
Thursday Night
A 30 percent chance of rain. Partly cloudy, with a low around 30.
Friday
Partly sunny, with a high near 44.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Partly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monmouth IL
 40.92°N 90.62°W (Elev. 719 ft)
Last Update:
6:22 pm CST Feb 14, 2026
Forecast Valid:
8pm CST Feb 14, 2026-6pm CST Feb 21, 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