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.

Fair

40°F

4°C

Humidity 58%
Wind Speed Calm
Barometer 30.14 in (1020.9 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 12 Jan 6:54 pm CST
Extended Forecast for

3 Miles ENE Hamburg IL

  • Tonight

    Tonight: Mostly clear, with a low around 37. Southwest wind 5 to 8 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 57. West wind 8 to 13 mph, with gusts as high as 26 mph.

    High: 57 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 34. West wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 34 °F

    Chance Rain
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a temperature rising to near 38 by noon, then falling to around 31 during the remainder of the day. Northwest wind 14 to 17 mph, with gusts as high as 34 mph.

    High: 38 °F⇓

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 17. North wind 8 to 14 mph, with gusts as high as 25 mph.

    Low: 17 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 37. Southwest wind 5 to 8 mph, with gusts as high as 20 mph.
Tuesday
Increasing clouds, with a high near 57. West wind 8 to 13 mph, with gusts as high as 26 mph.
Tuesday Night
A 30 percent chance of rain, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 34. West wind 9 to 14 mph, with gusts as high as 24 mph.
Wednesday
Partly sunny, with a temperature rising to near 38 by noon, then falling to around 31 during the remainder of the day. Northwest wind 14 to 17 mph, with gusts as high as 34 mph.
Wednesday Night
Mostly clear, with a low around 17. North wind 8 to 14 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 30.
Thursday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 25.
Friday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 40.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Partly sunny, with a high near 26.
Saturday Night
Partly cloudy, with a low around 8.
Sunday
Mostly sunny, with a high near 24.
Sunday Night
Partly cloudy, with a low around 11.
M.L.King Day
Mostly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Hamburg IL
 39.25°N 90.66°W (Elev. 699 ft)
Last Update:
4:46 pm CST Jan 12, 2026
Forecast Valid:
7pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation