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.

Fair

66°F

19°C

Humidity 78%
Wind Speed Calm
Barometer 29.96 in (1014.3 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 11 Oct 10:53 pm CDT
Extended Forecast for

Festus MO

  • Tonight

    Tonight: Increasing clouds, with a low around 61. Southwest wind 3 to 5 mph.

    Low: 61 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: Areas of fog before 7am. Otherwise, sunny, with a high near 94. Southwest wind 5 to 9 mph.

    High: 94 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. Southwest wind 5 to 7 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Heat index values as high as 100. Southwest wind 3 to 7 mph.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. South wind 3 to 6 mph.

    Low: 71 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 84. Chance of precipitation is 90%.

    High: 84 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

    Low: 63 °F

    Showers
    Likely

  • Thursday

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

    High: 80 °F

    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Tonight
Increasing clouds, with a low around 61. Southwest wind 3 to 5 mph.
Columbus Day
Areas of fog before 7am. Otherwise, sunny, with a high near 94. Southwest wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 69. Southwest wind 5 to 7 mph.
Tuesday
Sunny, with a high near 96. Heat index values as high as 100. Southwest wind 3 to 7 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. South wind 3 to 6 mph.
Wednesday
Showers and possibly a thunderstorm. High near 84. Chance of precipitation is 90%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Friday
Partly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 37.
Saturday
Sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Festus MO
 38.22°N 90.42°W (Elev. 499 ft)
Last Update:
10:16 pm CDT Oct 11, 2026
Forecast Valid:
11pm CDT Oct 11, 2026-6pm CDT Oct 18, 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