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

68°F

20°C

Humidity 47%
Wind Speed SE 17 G 24 mph
Barometer 29.93 in (1013.1 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 15 May 9:53 am CDT
Extended Forecast for

3 Miles NW Maeystown IL

  • Today

    Today: Mostly sunny, with a high near 84. South wind 11 to 13 mph, with gusts as high as 22 mph.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 67. South wind around 8 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before noon. Mostly cloudy, with a high near 85. South wind around 7 mph. Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. South wind around 8 mph.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 90. South wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Chance of precipitation is 70%.

    High: 86 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 84. South wind 11 to 13 mph, with gusts as high as 22 mph.
Tonight
A slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 67. South wind around 8 mph. Chance of precipitation is 20%.
Saturday
Showers and thunderstorms likely, mainly before noon. Mostly cloudy, with a high near 85. South wind around 7 mph. Chance of precipitation is 60%.
Saturday Night
Partly cloudy, with a low around 64. South wind around 8 mph.
Sunday
Sunny, with a high near 90. South wind 8 to 13 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 70.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 70.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Chance of precipitation is 70%.
Tuesday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Thursday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Maeystown IL
 38.27°N 90.28°W (Elev. 541 ft)
Last Update:
8:26 am CDT May 15, 2026
Forecast Valid:
11am CDT May 15, 2026-6pm CDT May 21, 2026
 
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Additional Resources

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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