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.

Thunderstorm Rain

75°F

24°C

Humidity 94%
Wind Speed SW 14 G 25 mph
Barometer 30.04 in
Dewpoint 73°F (23°C)
Visibility 3.00 mi
Last update 13 Jul 12:50 pm CDT
Extended Forecast for

Troy ILSimilar City Names

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly after 3pm. Cloudy, with a high near 84. South wind around 5 mph becoming light and variable. Chance of precipitation is 70%.

    High: 84 °F

    T-storms
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Patchy fog after 5am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 68. Light and variable wind.

    Low: 68 °F

    Chance
    T-storms then
    Patchy Fog

  • Monday

    Monday: Patchy fog before 7am. Otherwise, partly sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Patchy Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71. South wind around 6 mph becoming calm in the evening.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Calm wind becoming south 5 to 7 mph in the morning.

    High: 90 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.

    Low: 72 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly after 3pm. Cloudy, with a high near 84. South wind around 5 mph becoming light and variable. Chance of precipitation is 70%.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Patchy fog after 5am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 68. Light and variable wind.
Monday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 86. Light and variable wind.
Monday Night
Partly cloudy, with a low around 71. South wind around 6 mph becoming calm in the evening.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Calm wind becoming south 5 to 7 mph in the morning.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 73.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Troy ILSimilar City Names
 38.72°N 89.89°W (Elev. 551 ft)
Last Update:
12:21 pm CDT Jul 13, 2025
Forecast Valid:
1pm CDT Jul 13, 2025-6pm CDT Jul 19, 2025
 
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