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

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

68°F

20°C

Humidity 82%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 12 Jun 4:35 am CDT
Extended Forecast for

Troy ILSimilar City Names

  • Today

    Today: Mostly cloudy, with a high near 82. South wind 3 to 7 mph.

    High: 82 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Cloudy, with a low around 68. Southeast wind around 6 mph. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then showers likely between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 79. South wind 6 to 9 mph. Chance of precipitation is 90%.

    High: 79 °F

    Showers
    Likely then
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 69. South wind 3 to 7 mph. Chance of precipitation is 50%.

    Low: 69 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 83. South wind 5 to 7 mph becoming northwest in the afternoon. Chance of precipitation is 50%.

    High: 83 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

Today
Mostly cloudy, with a high near 82. South wind 3 to 7 mph.
Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Cloudy, with a low around 68. Southeast wind around 6 mph. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms before 10am, then showers likely between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 79. South wind 6 to 9 mph. Chance of precipitation is 90%.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 69. South wind 3 to 7 mph. Chance of precipitation is 50%.
Saturday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 83. South wind 5 to 7 mph becoming northwest in the afternoon. Chance of precipitation is 50%.
Saturday Night
Partly cloudy, with a low around 69.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 68.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
Troy ILSimilar City Names
 38.72°N 89.89°W (Elev. 551 ft)
Last Update:
2:52 am CDT Jun 12, 2025
Forecast Valid:
4am CDT Jun 12, 2025-6pm CDT Jun 18, 2025
 
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Additional Resources

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Chance of Precipitation