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

76°F

24°C

Humidity 39%
Wind Speed Calm
Barometer 30.21 in (1022.7 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 23 Jun 11:54 am CDT
Extended Forecast for

4 Miles SW Godfrey IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 81. Northeast wind 3 to 5 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 62. Southeast wind 3 to 5 mph.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. Southeast wind 5 to 7 mph becoming southwest in the afternoon.

    High: 82 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, then gradually becoming mostly clear, with a low around 66. Southwest wind around 6 mph becoming calm in the evening.

    Low: 66 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%.

    High: 84 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms. Low around 67. Chance of precipitation is 80%.

    Low: 67 °F

    T-storms

  • Friday

    Friday: Showers and thunderstorms. High near 82. Chance of precipitation is 80%.

    High: 82 °F

    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 89.

    High: 89 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 81. Northeast wind 3 to 5 mph.
Tonight
Partly cloudy, with a low around 62. Southeast wind 3 to 5 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. Southeast wind 5 to 7 mph becoming southwest in the afternoon.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, then gradually becoming mostly clear, with a low around 66. Southwest wind around 6 mph becoming calm in the evening.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms. Low around 67. Chance of precipitation is 80%.
Friday
Showers and thunderstorms. High near 82. Chance of precipitation is 80%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 89.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Godfrey IL
 38.93°N 90.25°W (Elev. 531 ft)
Last Update:
9:46 am CDT Jun 23, 2026
Forecast Valid:
12pm CDT Jun 23, 2026-6pm CDT Jun 29, 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