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.

Mostly Cloudy

66°F

19°C

Humidity 83%
Wind Speed Vrbl 5 mph
Barometer 30.09 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 4 Aug 7:50 am CDT
Extended Forecast for

Troy IL

  • Today

    Today: Isolated showers, then scattered showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.

    High: 82 °F

    Mostly Cloudy
    then
    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 7pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 66. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 66 °F

    Scattered
    T-storms then
    Patchy Fog

  • Tuesday

    Tuesday: Isolated showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 83. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 83 °F

    Patchy Fog
    then Isolated
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67. Light southeast wind.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. Light southeast wind.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Today
Isolated showers, then scattered showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.
Tonight
Scattered showers and thunderstorms, mainly before 7pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 66. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
Isolated showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 83. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 67. Light southeast wind.
Wednesday
Sunny, with a high near 87. Light southeast wind.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 70.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 92.
Saturday Night
Partly cloudy, with a low around 73.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Troy IL
 38.72°N 89.89°W (Elev. 551 ft)
Last Update:
7:53 am CDT Aug 4, 2025
Forecast Valid:
8am CDT Aug 4, 2025-6pm CDT Aug 10, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation