Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Mostly Cloudy

81°F

27°C

Humidity 54%
Wind Speed N 7 mph
Barometer 30.00 in (1015.3 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 20 Jun 11:54 am CDT
Extended Forecast for

3 Miles ESE Whiteside MO

Flood Watch June 21, 01:00am until June 21, 07:00pm
Click here for hazard details and duration
Flood Watch
  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 82. Light northwest wind.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly after 4am.  Increasing clouds, with a low around 66. Calm wind becoming east around 6 mph after midnight.  Chance of precipitation is 30%.

    Low: 66 °F

    Partly Cloudy
    then
    Scattered
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms. Some of the storms could produce heavy rainfall.  High near 78. Southeast wind 7 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 26 mph.  Chance of precipitation is 90%.

    High: 78 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and thunderstorms, mainly before midnight. Some of the storms could produce heavy rainfall.  Low around 62. Northwest wind 7 to 9 mph, with gusts as high as 21 mph.  Chance of precipitation is 80%.

    Low: 62 °F

    Heavy Rain
    then Isolated
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 75. North wind 6 to 9 mph.

    High: 75 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 82. Light northwest wind.
Tonight
Scattered showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 66. Calm wind becoming east around 6 mph after midnight. Chance of precipitation is 30%.
Sunday
Showers and thunderstorms. Some of the storms could produce heavy rainfall. High near 78. Southeast wind 7 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Sunday Night
Showers and thunderstorms, mainly before midnight. Some of the storms could produce heavy rainfall. Low around 62. Northwest wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 75. North wind 6 to 9 mph.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 61.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Whiteside MO
 39.17°N 90.98°W (Elev. 869 ft)
11:26 am CDT Jun 20, 2026
12pm CDT Jun 20, 2026-6pm CDT Jun 26, 2026
 
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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