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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

70°F

21°C

Humidity 73%
Wind Speed W 3 mph
Barometer 29.88 in (1011.4 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 18 Jun 7:53 pm CDT
Extended Forecast for

Festus MO

  • Tonight

    Tonight: Scattered sprinkles before 9pm. Partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Scattered
    Sprinkles

  • Juneteenth

    Juneteenth: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 87. Light and variable wind.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%.

    Low: 66 °F

    Mostly Clear
    then Chance
    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 85. Chance of precipitation is 80%.

    High: 85 °F

    Showers
    Likely then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then showers likely. Low around 66. Chance of precipitation is 90%.

    Low: 66 °F

    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 80.

    High: 80 °F

    Chance
    T-storms

  • Monday Night

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

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Scattered sprinkles before 9pm. Partly cloudy, with a low around 59. Calm wind.
Juneteenth
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 85. Calm wind.
Friday Night
Partly cloudy, with a low around 63. Calm wind.
Saturday
Sunny, with a high near 87. Light and variable wind.
Saturday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%.
Sunday
Showers and possibly a thunderstorm. High near 85. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 66. Chance of precipitation is 90%.
Monday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 80.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
A 20 percent chance of showers. Mostly clear, with a low around 62.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Festus MO
 38.22°N 90.39°W (Elev. 446 ft)
Last Update:
7:41 pm CDT Jun 18, 2026
Forecast Valid:
8pm CDT Jun 18, 2026-6pm CDT Jun 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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