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

70°F

21°C

Humidity 94%
Wind Speed SE 7 mph
Barometer 29.89 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 16 Jun 9:50 pm CDT
Extended Forecast for

Troy ILSimilar City Names

  • Tonight

    Tonight: Mostly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.

    High: 88 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: A slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 71. South wind around 7 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 86. South wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 86 °F

    Chance
    T-storms then
    Heavy Rain

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 68. Southwest wind 6 to 11 mph.

    Low: 68 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 68. Calm wind.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
A slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 71. South wind around 7 mph. Chance of precipitation is 20%.
Wednesday
Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 86. South wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Wednesday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 68. Southwest wind 6 to 11 mph.
Juneteenth
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 74.
Saturday
Sunny, with a high near 94.
Saturday Night
Mostly clear, with a low around 76.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 75.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Troy ILSimilar City Names
 38.72°N 89.89°W (Elev. 551 ft)
Last Update:
6:07 pm CDT Jun 16, 2025
Forecast Valid:
10pm CDT Jun 16, 2025-6pm CDT Jun 23, 2025
 
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Additional Resources

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Chance of Precipitation