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

48°F

9°C

Humidity 46%
Wind Speed S 16 mph
Barometer 29.79 in (1008.6 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 13 Mar 1:54 am CDT
Extended Forecast for

3 Miles WSW Greenfield IL

Wind Advisory until March 13, 11:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until March 13, 11:00am

    NOW until 11:00am Fri

    Wind Advisory

  • Overnight

    Low: 42 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 55. Breezy, with a west wind 15 to 22 mph, with gusts as high as 32 mph.

    High: 55 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33. West wind 5 to 7 mph becoming east after midnight.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 62. East wind 8 to 15 mph, with gusts as high as 22 mph.

    High: 62 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51. Southeast wind 10 to 15 mph, with gusts as high as 24 mph.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely and possibly a thunderstorm before 1pm, then rain between 1pm and 4pm, then rain and possibly a thunderstorm after 4pm. High near 68. Breezy. Chance of precipitation is 90%.

    High: 68 °F

    Breezy. Rain
    Likely then
    Rain

  • Sunday Night

    Sunday Night: Rain before 10pm, then snow, possibly mixed with rain between 10pm and 1am, then snow likely after 1am. Some thunder is also possible. Low around 19. Blustery. Chance of precipitation is 90%.

    Low: 19 °F

    Rain/Snow and
    Blustery

  • Monday

    Monday: A 40 percent chance of snow before 1pm. Mostly cloudy, with a high near 27. Blustery.

    High: 27 °F

    Chance Snow
    and Blustery

Detailed Forecast

Overnight
Mostly cloudy, with a low around 42. Breezy, with a southwest wind 20 to 23 mph, with gusts as high as 37 mph.
Friday
Partly sunny, with a high near 55. Breezy, with a west wind 15 to 22 mph, with gusts as high as 32 mph.
Friday Night
Partly cloudy, with a low around 33. West wind 5 to 7 mph becoming east after midnight.
Saturday
Partly sunny, with a high near 62. East wind 8 to 15 mph, with gusts as high as 22 mph.
Saturday Night
Mostly cloudy, with a low around 51. Southeast wind 10 to 15 mph, with gusts as high as 24 mph.
Sunday
Rain likely and possibly a thunderstorm before 1pm, then rain between 1pm and 4pm, then rain and possibly a thunderstorm after 4pm. High near 68. Breezy. Chance of precipitation is 90%.
Sunday Night
Rain before 10pm, then snow, possibly mixed with rain between 10pm and 1am, then snow likely after 1am. Some thunder is also possible. Low around 19. Blustery. Chance of precipitation is 90%.
Monday
A 40 percent chance of snow before 1pm. Mostly cloudy, with a high near 27. Blustery.
Monday Night
Mostly clear, with a low around 9. Blustery.
Tuesday
Mostly sunny, with a high near 33.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 58.
Wednesday Night
Mostly cloudy, with a low around 35.
Thursday
Sunny, with a high near 67.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Greenfield IL
 39.33°N 90.26°W (Elev. 551 ft)
Last Update:
1:25 am CDT Mar 13, 2026
Forecast Valid:
2am CDT Mar 13, 2026-6pm CDT Mar 19, 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