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

61°F

16°C

Humidity 31%
Wind Speed W 12 G 18 mph
Barometer 29.75 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 13 Jan 2:50 pm CST
Extended Forecast for

Troy IL

  • Tonight

    Tonight: A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 38. West wind 8 to 15 mph, with gusts as high as 22 mph.

    Low: 38 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of sprinkles and flurries before 10am, then a chance of flurries between 10am and 11am. Mostly cloudy through mid morning, then gradual clearing, with a temperature falling to around 30 by 5pm. Breezy, with a north wind 16 to 23 mph, with gusts as high as 31 mph.

    High: 39 °F⇓

    Breezy.
    Chance
    Sprinkles/Flurries
    then Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 17. Northwest wind 8 to 15 mph, with gusts as high as 22 mph.

    Low: 17 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 32. Northwest wind around 7 mph becoming south in the afternoon.

    High: 32 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow. Mostly cloudy, with a temperature rising to around 33 by 5am. South wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph.

    Low: 28 °F⇑

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 43. Breezy.

    High: 43 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 38. West wind 8 to 15 mph, with gusts as high as 22 mph.
Wednesday
A chance of sprinkles and flurries before 10am, then a chance of flurries between 10am and 11am. Mostly cloudy through mid morning, then gradual clearing, with a temperature falling to around 30 by 5pm. Breezy, with a north wind 16 to 23 mph, with gusts as high as 31 mph.
Wednesday Night
Clear, with a low around 17. Northwest wind 8 to 15 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 32. Northwest wind around 7 mph becoming south in the afternoon.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a temperature rising to around 33 by 5am. South wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph.
Friday
Partly sunny, with a high near 43. Breezy.
Friday Night
Mostly cloudy, with a low around 19.
Saturday
Partly sunny, with a high near 25.
Saturday Night
Partly cloudy, with a low around 10.
Sunday
Mostly sunny, with a high near 29.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Sunny, with a high near 33.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Mostly sunny, with a high near 31.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Troy IL
 38.74°N 89.89°W (Elev. 551 ft)
Last Update:
3:16 pm CST Jan 13, 2026
Forecast Valid:
3pm CST Jan 13, 2026-6pm CST Jan 20, 2026
 
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