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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 8:41 am CST Jan 24, 2026 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Sunday Monday Tuesday Wednesday Thursday Friday
80% chance of snow on Today 100% chance of snow on Tonight 100% chance of snow on Sunday Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday
High: 12°F Low: 10°F High: 17°F High: 15°F High: 32°F High: 25°F High: 20°F High: 21°F
Low: -1°F Low: 3°F Low: 5°F Low: 5°F Low: 3°F  
Snow Snow Snow Sunny Sunny Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
Feels like -9°F
Cloudy
Light Snow
as of 9:22 AM CST
Rel. Humidity: 46%
Dew Point: -11°F
Visibility: 10 Miles
Pressure: 30.62 in.
Flight Rule: VFR
Wind Data
9 MPH
030° Northeast
Cloud Level(s): Solid Overcast at 3500ft
Current Conditions at
ALTON - (KALN)
Feels like -15°F
Cloudy
as of 8:45 AM CST
Rel. Humidity: 41%
Dew Point: -15°F
Visibility: 10 Miles
Pressure: 30.63 in.
Flight Rule: VFR
Wind Data
15 MPH
040° Northeast
Cloud Level(s): Broken at 5000ft, Solid Overcast at 6500ft
Current Conditions at
EAST ST LOUIS - (KCPS)
Feels like -12°F
Cloudy
Light Snow
as of 8:53 AM CST
Rel. Humidity: 49%
Dew Point: -11°F
Visibility: 3 Miles
Pressure: 30.63 in.
Flight Rule: MVFR
Wind Data
10 MPH
040° Northeast
Cloud Level(s): Solid Overcast at 3600ft
Current Conditions at
ST LOUIS - (KSTL)
Feels like -13°F
Cloudy
Light Snow
as of 8:51 AM CST
Rel. Humidity: 41%
Dew Point: -15°F
Visibility: 9 Miles
Pressure: 30.61 in.
Flight Rule: VFR
Wind Data
13 MPH
060° Northeast
Cloud Level(s): Broken at 4900ft, Solid Overcast at 7000ft
80% chance of snow Today Today... Snow, mainly after noon. High near 12. Wind chill values as low as -10. Northeast wind around 10 mph. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 2 inches possible.

100% chance of snow Tonight Tonight... Snow. Low around 10. Northeast wind 8 to 10 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

100% chance of snow Sunday Sunday... Snow, mainly before 4pm. High near 17. North wind 11 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 6 inches possible.

Clearing on Sunday Night Sunday Night... Cloudy during the early evening, then gradual clearing, with a low around -1. Wind chill values as low as -15. Northwest wind 10 to 14 mph, with gusts as high as 21 mph.

Sunny on Monday Monday... Sunny and cold, with a high near 15. West wind 7 to 11 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 3.

Sunny on Tuesday Tuesday... Sunny, with a high near 32.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 5.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 25.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 5.

Mostly Sunny on Thursday Thursday... Mostly sunny and cold, with a high near 20.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 3.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 21.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:11 AM
Sunset: 5:12 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:41 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 6:13 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:44 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.