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

52°F

11°C

Humidity 50%
Wind Speed SW 8 mph
Barometer 30.21 in (1023.2 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 2 Nov 2:54 pm CST
Extended Forecast for

2 Miles S Greenfield IL

  • Tonight

    Tonight: Areas of frost before 4am, then areas of frost after 5am. Otherwise, mostly clear, with a low around 35. South wind 5 to 7 mph.

    Low: 35 °F

    Mostly Clear
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 63. West wind 5 to 8 mph becoming calm in the afternoon.

    High: 63 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37. Light and variable wind.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 68. South wind 5 to 15 mph, with gusts as high as 28 mph.

    High: 68 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance
    Showers

Detailed Forecast

Tonight
Areas of frost before 4am, then areas of frost after 5am. Otherwise, mostly clear, with a low around 35. South wind 5 to 7 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 63. West wind 5 to 8 mph becoming calm in the afternoon.
Monday Night
Partly cloudy, with a low around 37. Light and variable wind.
Tuesday
Mostly sunny, with a high near 68. South wind 5 to 15 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 49. Southwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
Sunny, with a high near 65.
Thursday Night
A 40 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 51.
Friday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 68.
Friday Night
Partly cloudy, with a low around 42.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Mostly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Greenfield IL
 39.31°N 90.23°W (Elev. 531 ft)
Last Update:
3:16 pm CST Nov 2, 2025
Forecast Valid:
3pm CST Nov 2, 2025-6pm CST Nov 9, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation