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

76°F

24°C

Humidity 72%
Wind Speed Calm
Barometer 30.01 in (1015.4 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 19 Jun 8:54 pm CDT
Extended Forecast for

Troy MO

  • Tonight

    Tonight: Clear, with a low around 64. Light south wind.

    Low: 64 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 92. Heat index values as high as 100. South wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 75. South wind around 9 mph, with gusts as high as 21 mph.

    Low: 75 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 106. Southwest wind 8 to 13 mph, with gusts as high as 25 mph.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. South wind 6 to 10 mph, with gusts as high as 22 mph.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 64. Light south wind.
Friday
Sunny, with a high near 92. Heat index values as high as 100. South wind 6 to 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 75. South wind around 9 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 94. Heat index values as high as 106. Southwest wind 8 to 13 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 75. South wind 6 to 10 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 95.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 73.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 74.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Troy MO
 38.95°N 90.99°W (Elev. 594 ft)
Last Update:
9:22 pm CDT Jun 19, 2025
Forecast Valid:
9pm CDT Jun 19, 2025-6pm CDT Jun 26, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation