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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 10:06 pm CST Dec 12, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Mostly Cloudy on Tonight 20% chance of snow on Saturday Sunny on Sunday Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday 20% chance of rain on Thursday Partly Sunny on Friday
Low: 22°F High: 27°F High: 13°F High: 39°F High: 50°F High: 56°F High: 56°F High: 51°F
Low: 4 °F Low: 6 °F Low: 25°F Low: 36°F Low: 45°F Low: 34°F  
Mostly Cloudy Snow Sunny Sunny Sunny Mostly Sunny Rain Partly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
36°
Cloudy
as of 10:55 PM CST
Rel. Humidity: 80%
Dew Point: 30°F
Visibility: 9 Miles
Pressure: 30.19 in.
Flight Rule: MVFR
Wind Data
5 MPH
300° Northwest
Cloud Level(s): Solid Overcast at 1300ft
Current Conditions at
ALTON - (KALN)
36°
Cloudy
as of 11:15 PM CST
Rel. Humidity: 80%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.19 in.
Flight Rule: MVFR
Wind Data
3 MPH
310° Northwest
Cloud Level(s): Solid Overcast at 1300ft
Current Conditions at
ST LOUIS - (KSTL)
34°
Cloudy
as of 10:51 PM CST
Rel. Humidity: 80%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.20 in.
Flight Rule: MVFR
Wind Data
8 MPH
260° West
Cloud Level(s): Solid Overcast at 1200ft
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 22. Northwest wind 6 to 8 mph.
20% chance of snow Saturday Saturday... A 20 percent chance of snow after 11am. Cloudy, with a high near 27. North wind 8 to 13 mph.
20% chance of snow Saturday Night Saturday Night... A 20 percent chance of snow before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 4. Wind chill values as low as -10. Northwest wind 13 to 15 mph, with gusts as high as 22 mph.
Sunny on Sunday Sunday... Sunny and cold, with a high near 13. Wind chill values as low as -15. North wind 5 to 14 mph, with gusts as high as 21 mph.
Clear on Sunday Night Sunday Night... Clear, with a low around 6. Calm wind becoming south 5 to 8 mph after midnight.
Sunny on Monday Monday... Sunny, with a high near 39.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 25.
Sunny on Tuesday Tuesday... Sunny, with a high near 50.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 36.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 56.
20% chance of rain Wednesday Night Wednesday Night... A 20 percent chance of rain. Mostly cloudy, with a low around 45.
20% chance of rain Thursday Thursday... A 20 percent chance of rain. Partly sunny, with a high near 56.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 34.
Partly Sunny on Friday Friday... Partly sunny, with a high near 51.
Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:09 AM
Sunset: 4:38 PM
Civil Sunrise:06:40 AM
Civil Sunset: 5:08 PM
Nautical Sunrise: 06:06 AM
Nautical Sunset: 5:42 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 6:14 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.