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

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

71°F

22°C

Humidity 90%
Wind Speed Calm
Barometer 30.03 in (1016.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 14 Oct 10:54 am CDT
Extended Forecast for

Hamburg IL

  • Today

    Today: A 20 percent chance of showers before 4pm. Cloudy, with a high near 75. Light north wind.

    High: 75 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 65. Light north wind. Chance of precipitation is 60%.

    Low: 65 °F

    Cloudy then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. High near 79. Light and variable wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 90%.

    High: 79 °F

    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 49. Northwest wind 7 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    Low: 49 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 55. Northwest wind around 17 mph, with gusts as high as 33 mph.

    High: 55 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers before 4pm. Cloudy, with a high near 75. Light north wind.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 65. Light north wind. Chance of precipitation is 60%.
Thursday
Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. High near 79. Light and variable wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 90%.
Thursday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 49. Northwest wind 7 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Friday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 55. Northwest wind around 17 mph, with gusts as high as 33 mph.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Sunny, with a high near 60.
Saturday Night
Clear, with a low around 41.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Partly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hamburg IL
 39.23°N 90.72°W (Elev. 430 ft)
Last Update:
11:31 am CDT Oct 14, 2026
Forecast Valid:
11am CDT Oct 14, 2026-6pm CDT Oct 20, 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