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

69°F

21°C

Humidity 73%
Wind Speed E 5 mph
Barometer 29.93 in (1012.9 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 20 Jun 11:54 pm CDT
Extended Forecast for

5 Miles SE Whiteside MO

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

  • Overnight

    Overnight: Mostly cloudy, with a low around 68. Calm wind becoming east around 6 mph.

    Low: 68 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms. High near 79. Southeast wind 9 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 80%.

    High: 79 °F

    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms, mainly before midnight. Low around 60. Southwest wind 7 to 9 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    Low: 60 °F

    T-storms then
    Slight Chance
    T-storms

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 75. North wind 7 to 9 mph, with gusts as high as 20 mph.

    High: 75 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59. Northeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy

  • 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

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 68. Calm wind becoming east around 6 mph.
Sunday
Showers and thunderstorms. High near 79. Southeast wind 9 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 80%.
Sunday Night
Showers and thunderstorms, mainly before midnight. Low around 60. Southwest wind 7 to 9 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 75. North wind 7 to 9 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 59. Northeast wind around 5 mph becoming calm in the evening.
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
Partly cloudy, with a low around 60.
Thursday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 80.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 60.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Whiteside MO
 39.13°N 90.95°W (Elev. 801 ft)
Last Update:
11:51 pm CDT Jun 20, 2026
Forecast Valid:
12am CDT Jun 21, 2026-6pm CDT Jun 27, 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