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

65°F

18°C

Humidity 73%
Wind Speed Calm
Barometer 30.03 in (1016.7 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 27 Sep 7:53 pm CDT
Extended Forecast for

Festus MO

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. Light and variable wind.

    Low: 55 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. Calm wind.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 62. Southeast wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely, with thunderstorms also possible after 1am. Cloudy, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 55. Light and variable wind.
Monday
Mostly sunny, with a high near 77. Calm wind.
Monday Night
Mostly clear, with a low around 53. Calm wind.
Tuesday
Sunny, with a high near 83. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 62. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 88.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 68.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Thursday Night
Showers likely, with thunderstorms also possible after 1am. Cloudy, with a low around 62. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 70. Chance of precipitation is 50%.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 54.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 69.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Sunday
A 30 percent chance of showers. Mostly sunny, with a high near 70.
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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:
8:36 pm CDT Sep 27, 2026
Forecast Valid:
8pm CDT Sep 27, 2026-6pm CDT Oct 4, 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