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.

A Few Clouds

86°F

30°C

Humidity 59%
Wind Speed Vrbl 6 mph
Barometer 29.85 in (1010.5 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 17 Jun 1:53 pm CDT
Extended Forecast for

Festus MO

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 91. Calm wind.

    High: 91 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 73. South wind 3 to 5 mph.

    Low: 73 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 88. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 88 °F

    Slight Chance
    T-storms then
    Heavy Rain

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 9pm. Mostly cloudy, with a low around 67. Southwest wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Juneteenth

    Juneteenth: Sunny, with a high near 87. Calm wind becoming northwest around 5 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 91. Calm wind.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 73. South wind 3 to 5 mph.
Wednesday
Showers and thunderstorms likely, mainly between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 88. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely, mainly before 9pm. Mostly cloudy, with a low around 67. Southwest wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 60%.
Juneteenth
Sunny, with a high near 87. Calm wind becoming northwest around 5 mph.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 93.
Friday Night
Mostly clear, with a low around 74.
Saturday
Sunny and hot, with a high near 97.
Saturday Night
Clear, with a low around 75.
Sunday
Sunny and hot, with a high near 97.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 96.
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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:
11:37 am CDT Jun 17, 2025
Forecast Valid:
2pm CDT Jun 17, 2025-6pm CDT Jun 23, 2025
 
Forecast Discussion
 
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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