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.

Fair

67°F

19°C

Humidity 66%
Wind Speed S 15 G 24 mph
Barometer 29.83 in (1009.9 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 9 Mar 10:54 am CDT
Extended Forecast for

Defiance MO

  • Today

    Today: Mostly sunny, with a high near 81. South wind 11 to 13 mph, with gusts as high as 24 mph.

    High: 81 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. Southwest wind around 7 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers, mainly after 4pm. Increasing clouds, with a high near 84. South wind 5 to 11 mph, with gusts as high as 23 mph.

    High: 84 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 53. South wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    Low: 53 °F

    Showers
    Likely then
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Temperature rising to near 62 by 10am, then falling to around 51 during the remainder of the day. Southwest wind 10 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%.

    High: 62 °F⇓

    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 81. South wind 11 to 13 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 60. Southwest wind around 7 mph.
Tuesday
A 50 percent chance of showers, mainly after 4pm. Increasing clouds, with a high near 84. South wind 5 to 11 mph, with gusts as high as 23 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 53. South wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm. Temperature rising to near 62 by 10am, then falling to around 51 during the remainder of the day. Southwest wind 10 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
Sunny, with a high near 56.
Thursday Night
Mostly cloudy, with a low around 45.
Friday
Partly sunny, with a high near 65.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 49.
Sunday
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Defiance MO
 38.63°N 90.77°W (Elev. 479 ft)
Last Update:
9:51 am CDT Mar 9, 2026
Forecast Valid:
11am CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
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