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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 3:16 pm CST Jan 24, 2026 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
100% chance of snow on This Afternoon 100% chance of snow on Tonight 100% chance of snow on Sunday Sunny on Monday Sunny on Tuesday Partly Sunny on Wednesday Partly Sunny on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday
High: 12°F Low: 10°F High: 16°F High: 14°F High: 30°F High: 24°F High: 19°F High: 19°F High: 22°F
Low: -3°F Low: 2°F Low: 4°F Low: 1°F Low: 1°F Low: 3°F  
Snow Snow Snow Sunny Sunny Partly Sunny Partly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
Feels like -4°F
Mostly Clear
Light Snow
as of 4:05 PM CST
Rel. Humidity: 78%
Dew Point: 3°F
Visibility: 1/2 Miles
Pressure: 30.42 in.
Flight Rule: IFR
Wind Data
9 MPH
020° North
Cloud Level(s): Few at 300ft
Current Conditions at
ALTON - (KALN)
Cloudy
Light Snow
as of 3:50 PM CST
Rel. Humidity: 78%
Dew Point: 3°F
Visibility: 1 Miles
Pressure: 30.45 in.
Flight Rule: IFR
Wind Data
8 MPH
050° Northeast
Cloud Level(s): Solid Overcast at 1600ft
Current Conditions at
EAST ST LOUIS - (KCPS)
Feels like -6°F
Cloudy
Light Snow
as of 3:53 PM CST
Rel. Humidity: 77%
Dew Point: 1°F
Visibility: 1 Miles
Pressure: 30.44 in.
Flight Rule: IFR
Wind Data
9 MPH
040° Northeast
Cloud Level(s): Solid Overcast at 2400ft
Current Conditions at
ST LOUIS - (KSTL)
Feels like -6°F
Cloudy
Light Snow
as of 4:23 PM CST
Rel. Humidity: 78%
Dew Point: 3°F
Visibility: 1 3/4 Miles
Pressure: 30.40 in.
Flight Rule: IFR
Wind Data
12 MPH
040° Northeast
Cloud Level(s): Broken at 3000ft, Solid Overcast at 5000ft
100% chance of snow This Afternoon This Afternoon... Snow. High near 12. Northeast wind around 10 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than one inch possible.

100% chance of snow Tonight Tonight... Snow. The snow could be heavy at times. Low around 10. North wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

100% chance of snow Sunday Sunday... Snow, mainly before 4pm. The snow could be heavy at times. High near 16. North wind 11 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

Mostly Clear on Sunday Night Sunday Night... Mostly cloudy, then gradually becoming mostly clear, with a low around -3. Wind chill values as low as -20. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Sunny on Monday Monday... Sunny and cold, with a high near 14. Northwest wind 7 to 11 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 2.

Sunny on Tuesday Tuesday... Sunny, with a high near 30.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 4.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 24.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 1.

Partly Sunny on Thursday Thursday... Partly sunny and cold, with a high near 19.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 1.

Mostly Sunny on Friday Friday... Mostly sunny and cold, with a high near 19.

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

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 22.

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.