Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

Galesburg Municipal Airport (KGBG)

Lat: 40.93°NLon: 90.43°WElev: 751ft.

Fair

69°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 19 Aug 9:35 pm CDT
Extended Forecast for

Monmouth IL

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm.  Patchy fog after 4am.  Otherwise, partly cloudy, with a low around 63. East wind around 5 mph becoming calm  in the evening.

    Low: 63 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 8am.  Otherwise, sunny, with a high near 80. Calm wind becoming northeast around 5 mph.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 82. Light and variable wind becoming southwest 5 to 10 mph in the morning.

    High: 82 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of thunderstorms before 7pm.  Mostly clear, with a low around 64. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers before 10pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 63. East wind around 5 mph becoming calm in the evening.
Thursday
Patchy fog before 8am. Otherwise, sunny, with a high near 80. Calm wind becoming northeast around 5 mph.
Thursday Night
Mostly clear, with a low around 63. Calm wind.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 82. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Friday Night
A chance of thunderstorms before 7pm. Mostly clear, with a low around 64. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Partly sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Partly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Monmouth IL
 40.92°N 90.62°W (Elev. 719 ft)
9:21 pm CDT Aug 19, 2026
9pm CDT Aug 19, 2026-6pm CDT Aug 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

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