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

Severe Thunderstorm and Excessive Rainfall Potential for the Central U.S. Today

Severe thunderstorms with a threat for large hail, isolated damaging winds and possibly a tornado are expected in parts of eastern Colorado today from mid afternoon to early evening. Several days of heavy rainfall will begin today over the western Gulf Coast where Flood Watches and excessive rainfall outlooks have been issued for today, Saturday, and Sunday. Read More >

Current conditions at

Galesburg Municipal Airport (KGBG)

Lat: 40.93°NLon: 90.43°WElev: 751ft.

Fair

70°F

21°C

Humidity 45%
Wind Speed E 7 G 18 mph
Barometer 30.16 in
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 21 May 3:35 pm CDT
Extended Forecast for

Monmouth IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 69. East wind 10 to 15 mph.

    High: 69 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 51. East wind around 10 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 69. East wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 69 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly between 9pm and 1am. Mostly cloudy, with a low around 54. Northeast wind 5 to 10 mph.

    Low: 54 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 69. East wind 10 to 15 mph.
Tonight
Mostly cloudy, with a low around 51. East wind around 10 mph, with gusts as high as 20 mph.
Friday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 69. East wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
A 30 percent chance of showers, mainly between 9pm and 1am. Mostly cloudy, with a low around 54. Northeast wind 5 to 10 mph.
Saturday
Partly sunny, with a high near 77.
Saturday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 56.
Sunday
Partly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 56.
Memorial Day
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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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:
2:51 pm CDT May 21, 2026
Forecast Valid:
3pm CDT May 21, 2026-6pm CDT May 27, 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