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

Hazardous Weather Conditions

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

90°F

32°C

Humidity 66%
Wind Speed SW 14 mph
Barometer 29.88 in (1011.2 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 27 Jul 10:54 am CDT
Extended Forecast for

Hamburg IL

Extreme Heat Warning July 27, 11:34am until July 27, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 27, 11:34am until July 27, 09:00pm

    NOW until 9:00pm Mon

    Extreme Heat Warning

  • Today

    High: 97 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 78. West wind around 5 mph becoming light and variable in the evening.

    Low: 78 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90. Heat index values as high as 101. North wind 3 to 6 mph.

    High: 90 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70. North wind around 5 mph becoming calm in the evening.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 87. Light east wind.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Sunny and hot, with a high near 97. Heat index values as high as 110. Southwest wind 7 to 9 mph.
Tonight
Partly cloudy, with a low around 78. West wind around 5 mph becoming light and variable in the evening.
Tuesday
Mostly sunny, with a high near 90. Heat index values as high as 101. North wind 3 to 6 mph.
Tuesday Night
Partly cloudy, with a low around 70. North wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 87. Light east wind.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 88.
Thursday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Sunny, with a high near 86.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hamburg IL
 39.23°N 90.72°W (Elev. 430 ft)
Last Update:
10:31 am CDT Jul 27, 2026
Forecast Valid:
11am CDT Jul 27, 2026-6pm CDT Aug 2, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation