Hazardous Weather Conditions

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 69%
Wind Speed W 9 mph
Barometer 29.68 in (1004.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 21 Jun 6:54 pm CDT
Extended Forecast for

2 Miles WSW Greenfield IL

Flood Watch June 21, 07:06pm until June 22, 01:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 21, 07:06pm until June 22, 01:00am

    NOW until 1:00am Mon

    Flood Watch

  • Tonight

    Low: 62 °F

    Chance
    T-storms then
    Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 74. North wind around 11 mph.

    High: 74 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 55. North wind 5 to 7 mph becoming calm  in the evening.

    Low: 55 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 79. East wind 3 to 5 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58. Light and variable wind.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 83. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 62. Southwest wind 8 to 10 mph becoming northwest after midnight. Winds could gust as high as 22 mph.
Monday
Mostly cloudy, with a high near 74. North wind around 11 mph.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 55. North wind 5 to 7 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 79. East wind 3 to 5 mph.
Tuesday Night
Partly cloudy, with a low around 58. Light and variable wind.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 63.
Thursday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
Thursday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 61.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Greenfield IL
 39.33°N 90.26°W (Elev. 551 ft)
5:46 pm CDT Jun 21, 2026
7pm CDT Jun 21, 2026-6pm CDT Jun 28, 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