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.

Rain

57°F

14°C

Humidity 94%
Wind Speed NW 8 mph
Barometer 29.82 in
Dewpoint 55°F (13°C)
Visibility 5.00 mi
Last update 8 May 9:45 pm CDT
Extended Forecast for

Troy ILSimilar City Names

  • Tonight

    Tonight: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 1am. Low around 54. Light and variable wind. Chance of precipitation is 90%.

    Low: 54 °F

    Showers then
    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 79. West wind 5 to 13 mph, with gusts as high as 20 mph.

    High: 79 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Increasing clouds, with a low around 56. Light and variable wind becoming north 5 to 7 mph after midnight. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Partly sunny, with a high near 68. North wind 8 to 10 mph.

    High: 68 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45. North wind 3 to 7 mph.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 77.

    High: 77 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 57.

    Low: 57 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 1am. Low around 54. Light and variable wind. Chance of precipitation is 90%.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 79. West wind 5 to 13 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Increasing clouds, with a low around 56. Light and variable wind becoming north 5 to 7 mph after midnight. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 68. North wind 8 to 10 mph.
Sunday Night
Partly cloudy, with a low around 45. North wind 3 to 7 mph.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 49.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 77.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 57.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 76.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Friday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Troy ILSimilar City Names
 38.72°N 89.89°W (Elev. 551 ft)
Last Update:
10:11 pm CDT May 8, 2026
Forecast Valid:
10pm CDT May 8, 2026-6pm CDT May 15, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation