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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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No Watches or Warnings for Troy
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Weather Forecast for Troy, Illinois : Madison County
Issued: 10:31 am CST Dec 11, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Friday Saturday Sunday Monday Tuesday Wednesday
40% chance of snow on This Afternoon 20% chance of snow on Tonight Mostly Cloudy on Friday 50% chance of snow on Saturday Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday Mostly Cloudy on Wednesday
High: 35°F Low: 30°F High: 37°F High: 26°F High: 14°F High: 38°F High: 43°F High: 50°F
Low: 21°F Low: 0°F Low: 3°F Low: 23°F Low: 34°F  
Snow Snow Mostly Cloudy Snow Sunny Sunny Mostly Sunny Mostly Cloudy
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Current Conditions at
SCOTT AFB - (KBLV)
36°
Cloudy
as of 12:55 PM CST
Rel. Humidity: 64%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
3 MPH
170° South
Cloud Level(s): Solid Overcast at 8500ft
Current Conditions at
ALTON - (KALN)
34°
Cloudy
as of 12:50 PM CST
Rel. Humidity: 64%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
5 MPH
Cloud Level(s): Solid Overcast at 9000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
36°
Cloudy
as of 12:53 PM CST
Rel. Humidity: 64%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
3 MPH
190° South
Cloud Level(s): Solid Overcast at 9000ft
Current Conditions at
ST LOUIS - (KSTL)
36°
Cloudy
as of 12:51 PM CST
Rel. Humidity: 59%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
3 MPH
190° South
Cloud Level(s): Solid Overcast at 8500ft
40% chance of snow This Afternoon This Afternoon... A 40 percent chance of snow after 3pm. Cloudy, with a high near 35. Southeast wind 6 to 8 mph.
20% chance of snow Tonight Tonight... A 20 percent chance of snow before 7pm. Mostly cloudy, with a low around 30. East wind 6 to 10 mph becoming north after midnight. Winds could gust as high as 20 mph.
Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 37. North wind 8 to 11 mph.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 21. Northwest wind 6 to 8 mph.
50% chance of snow Saturday Saturday... A 50 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 26. North wind 6 to 10 mph.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 0.
Sunny on Sunday Sunday... Sunny and cold, with a high near 14.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 3.
Sunny on Monday Monday... Sunny, with a high near 38.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 23.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 43.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 34.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 50.
Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:08 AM
Sunset: 4:38 PM
Civil Sunrise:06:38 AM
Civil Sunset: 5:08 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 5:41 PM
Astro Sunrise: 05:33 AM
Astro Sunset: 6:13 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.