National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Mostly Cloudy

83°F

28°C

Humidity 79%
Wind Speed SW 10 G 20 mph
Barometer 29.70 in (1005.3 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 21 Jun 4:53 pm CDT
Extended Forecast for

4 Miles E Maeystown IL

Flood Watch June 21, 05:39pm until June 22, 07:00am
Tornado Watch until June 21, 09:00pm
Click here for hazard details and duration
Flood Watch
Tornado Watch
  •  
    Flood Watch June 21, 05:39pm until June 22, 07:00am
    Tornado Watch until June 21, 09:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 83 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before midnight. Some of the storms could be severe. Mostly cloudy, with a low around 63. Southwest wind 6 to 10 mph becoming northwest after midnight. Chance of precipitation is 70%.

    Low: 63 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Mostly cloudy, with a high near 76. North wind 8 to 10 mph.

    High: 76 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 60. North wind 5 to 8 mph becoming calm in the evening.

    Low: 60 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 81. Northeast wind around 5 mph becoming calm in the afternoon.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 66. Chance of precipitation is 40%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Some of the storms could be severe. Mostly cloudy, with a high near 83. South wind around 11 mph, with gusts as high as 22 mph.
Tonight
Showers and thunderstorms likely, mainly before midnight. Some of the storms could be severe. Mostly cloudy, with a low around 63. Southwest wind 6 to 10 mph becoming northwest after midnight. Chance of precipitation is 70%.
Monday
Mostly cloudy, with a high near 76. North wind 8 to 10 mph.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 60. North wind 5 to 8 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 81. Northeast wind around 5 mph becoming calm in the afternoon.
Tuesday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 62.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Wednesday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 66. Chance of precipitation is 40%.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday
Mostly sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Maeystown IL
 38.24°N 90.16°W (Elev. 692 ft)
Last Update:
5:21 pm CDT Jun 21, 2026
Forecast Valid:
5pm CDT Jun 21, 2026-6pm CDT Jun 28, 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