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

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Mostly Cloudy with Haze

79°F

26°C

Humidity 77%
Wind Speed Vrbl 6 mph
Barometer 29.89 in (1011.4 mb)
Dewpoint 71°F (22°C)
Visibility 6.00 mi
Heat Index82°F (28°C)
Last update 9 Jul 4:54 pm CDT
Extended Forecast for

2 Miles ESE Defiance MO

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms. Cloudy, with a steady temperature around 80. Calm wind. Chance of precipitation is 30%.

    High: 80 °F

    Scattered
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly between 1am and 4am. Mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 60%.

    Low: 72 °F

    T-storms
    Likely

  • Friday

    Friday: Scattered showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 89. Heat index values as high as 102. Light and variable wind. Chance of precipitation is 30%.

    High: 89 °F

    Scattered
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 70%.

    Low: 70 °F

    T-storms
    Likely

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Calm wind.

    High: 86 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Cloudy, with a steady temperature around 80. Calm wind. Chance of precipitation is 30%.
Tonight
Showers and thunderstorms likely, mainly between 1am and 4am. Mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 60%.
Friday
Scattered showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 89. Heat index values as high as 102. Light and variable wind. Chance of precipitation is 30%.
Friday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 70%.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Calm wind.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 68.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.
Sunday Night
Mostly clear, with a low around 68.
Monday
Sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 70.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Defiance MO
 38.63°N 90.74°W (Elev. 440 ft)
Last Update:
2:41 pm CDT Jul 9, 2026
Forecast Valid:
4pm CDT Jul 9, 2026-6pm CDT Jul 16, 2026
 
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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