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.

Mostly Cloudy

61°F

16°C

Humidity 84%
Wind Speed E 6 mph
Barometer 29.63 in (1003.0 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 17 Jun 5:54 am CDT
Extended Forecast for

Elsah IL

Wind Advisory June 17, 01:00pm until June 17, 08:00pm
Click here for hazard details and duration
Wind Advisory

  • Today

    Today: A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 92. Breezy, with a southeast wind 7 to 12 mph becoming southwest 18 to 28 mph in the morning. Winds could gust as high as 46 mph. Chance of precipitation is 20%.

    High: 92 °F

    Slight Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 11pm. Mostly cloudy, with a low around 67. Breezy, with a west wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 70%.

    Low: 67 °F

    T-storms
    Likely and
    Breezy then
    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 80. Northwest wind 7 to 9 mph.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 60. Northwest wind around 6 mph becoming calm in the evening.

    Low: 60 °F

    Decreasing
    Clouds

  • Juneteenth

    Juneteenth: Sunny, with a high near 83. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 68.

    Low: 68 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 85. Chance of precipitation is 70%.

    High: 85 °F

    Heavy Rain

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 92. Breezy, with a southeast wind 7 to 12 mph becoming southwest 18 to 28 mph in the morning. Winds could gust as high as 46 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely, mainly before 11pm. Mostly cloudy, with a low around 67. Breezy, with a west wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 70%.
Thursday
A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 80. Northwest wind 7 to 9 mph.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 60. Northwest wind around 6 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 83. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 64.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 68.
Sunday
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 85. Chance of precipitation is 70%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 66. Chance of precipitation is 80%.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Partly sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Elsah IL
 38.93°N 90.36°W (Elev. 407 ft)
Last Update:
4:46 am CDT Jun 17, 2026
Forecast Valid:
6am CDT Jun 17, 2026-6pm CDT Jun 23, 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