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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

25°F

-4°C

Humidity 69%
Wind Speed NE 3 mph
Barometer 30.41 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 4 Feb 5:45 pm CST
Extended Forecast for

3 Miles S Troy IL

  • Tonight

    Tonight: Partly cloudy, with a low around 14. North wind around 6 mph becoming calm in the evening.

    Low: 14 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 37. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 37 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 28. South wind 5 to 9 mph becoming west after midnight.

    Low: 28 °F

    Decreasing
    Clouds

  • Friday

    Friday: Mostly sunny, with a high near 48. West wind 10 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 48 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25. North wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 14. North wind around 6 mph becoming calm in the evening.
Thursday
Mostly cloudy, with a high near 37. Light south wind becoming southwest 5 to 10 mph in the morning.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 28. South wind 5 to 9 mph becoming west after midnight.
Friday
Mostly sunny, with a high near 48. West wind 10 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.
Friday Night
Partly cloudy, with a low around 25. North wind 6 to 13 mph, with gusts as high as 21 mph.
Saturday
Mostly sunny, with a high near 36.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 31.
Monday
Sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 39.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 60.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 41.
Wednesday
A 20 percent chance of rain. Sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Troy IL
 38.7°N 89.89°W (Elev. 551 ft)
Last Update:
2:37 pm CST Feb 4, 2026
Forecast Valid:
6pm CST Feb 4, 2026-6pm CST Feb 11, 2026
 
Forecast Discussion
 
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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