Severe Thunderstorms in the Northern Plains and Upper Midwest; Critical Fire Weather in the West; Dangerous Heat in the Central and Eastern U.S.

Severe thunderstorms are likely today across the northern Plains and into the upper Mississippi Valley. Gusty winds and dry conditions will result in widespread critical fire weather through Saturday across parts of the Four Corners region and the Great Basin. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Read More >

Current conditions at

Galesburg Municipal Airport (KGBG)

Lat: 40.93°NLon: 90.43°WElev: 751ft.

Fair

81°F

27°C

Humidity 69%
Wind Speed S 10 G 18 mph
Barometer 29.85 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 20 Jun 5:55 pm CDT
Extended Forecast for

Monmouth IL

Heat Advisory June 21, 12:00pm until June 23, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Mostly clear, with a low around 75. South wind around 15 mph, with gusts as high as 30 mph.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 105. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 94 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Clear, with a low around 75. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 75 °F

    Mostly Clear
    and Breezy
    then Clear

  • Sunday

    Sunday: Sunny, with a high near 94. Heat index values as high as 103. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 94 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 74.

    Low: 74 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers after 1am.  Partly cloudy, with a low around 72.

    Low: 72 °F

    Mostly Clear
    then Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 75. South wind around 15 mph, with gusts as high as 30 mph.
Saturday
Sunny, with a high near 94. Heat index values as high as 105. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.
Saturday Night
Clear, with a low around 75. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Sunny, with a high near 94. Heat index values as high as 103. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Clear, with a low around 74.
Monday
Sunny, with a high near 93.
Monday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 72.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 92. Chance of precipitation is 40%.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Monmouth IL
 40.92°N 90.65°W (Elev. 751 ft)
6:02 pm CDT Jun 20, 2025
6pm CDT Jun 20, 2025-6pm CDT Jun 27, 2025
 
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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