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

Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Galesburg Municipal Airport (KGBG)

Lat: 40.93°NLon: 90.43°WElev: 751ft.

Partly Cloudy

87°F

31°C

Humidity 69%
Wind Speed S 20 G 30 mph
Barometer 29.87 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 29 Jun 4:15 pm CDT
Extended Forecast for

Gilson IL

Heat Advisory June 29, 04:27pm until July 3, 12:00am
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 29, 04:27pm until July 3, 12:00am

    NOW until 12:00am Fri

    Heat Advisory

  • Tonight

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. Heat index values as high as 109. South southwest wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 73. South southwest wind 7 to 13 mph, with gusts as high as 26 mph.

    Low: 73 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Heat index values as high as 103. South southwest wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South southwest wind 6 to 13 mph, with gusts as high as 23 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 93. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 93 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South wind 3 to 7 mph.

    Low: 74 °F

    Partly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

    High: 90 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 75. South wind 8 to 14 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 94. Heat index values as high as 109. South southwest wind 10 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Clear, with a low around 73. South southwest wind 7 to 13 mph, with gusts as high as 26 mph.
Wednesday
Sunny, with a high near 93. Heat index values as high as 103. South southwest wind 6 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 76. South southwest wind 6 to 13 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 93. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South wind 3 to 7 mph.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Friday Night
Partly cloudy, with a low around 72.
Independence Day
Mostly sunny, with a high near 90.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Sunday Night
A chance of showers. Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gilson IL
 40.87°N 90.19°W (Elev. 656 ft)
Last Update:
2:00 pm CDT Jun 29, 2026
Forecast Valid:
4pm CDT Jun 29, 2026-6pm CDT Jul 6, 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