Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Galesburg Municipal Airport (KGBG)

Lat: 40.93°NLon: 90.43°WElev: 751ft.

Overcast

82°F

28°C

Humidity 74%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 19 Aug 2:55 pm CDT
Extended Forecast for

4 Miles NW Gerlaw IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 84. North wind around 5 mph.

    High: 84 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm.  Patchy fog after 4am.  Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 63. North wind around 5 mph becoming calm.  Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 8am.  Otherwise, sunny, with a high near 81. Calm wind becoming northeast around 5 mph.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. Calm wind becoming south around 5 mph.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °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 81.

    High: 81 °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 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. North wind around 5 mph.
Tonight
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Patchy fog after 4am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 63. North wind around 5 mph becoming calm. Chance of precipitation is 30%.
Thursday
Patchy fog before 8am. Otherwise, sunny, with a high near 81. Calm wind becoming northeast around 5 mph.
Thursday Night
Mostly clear, with a low around 63. Calm wind becoming south around 5 mph.
Friday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Sunny, with a high near 83. Chance of precipitation is 30%.
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 81.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Mostly 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 82.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Gerlaw IL
 41.03°N 90.64°W (Elev. 633 ft)
2:46 pm CDT Aug 19, 2026
3pm CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database