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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 Dec 5, 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 Partly Sunny on Saturday 30% chance of rain & snow on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday 30% chance of rain on Wednesday Mostly Cloudy on Thursday Mostly Sunny on Friday
Low: 27°F High: 39°F High: 40°F High: 32°F High: 47°F High: 46°F High: 41°F High: 31°F
Low: 30°F Low: 18°F Low: 22°F Low: 37°F Low: 26°F Low: 21°F  
Mostly Cloudy Partly Sunny Rain & Snow Mostly Sunny Mostly Sunny Rain Mostly Cloudy Mostly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
41°
Feels like 35°F
Clear
as of 3:55 PM CST
Rel. Humidity: 44%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
9 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
36°
Clear
as of 3:50 PM CST
Rel. Humidity: 51%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
6 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
43°
Clear
as of 3:53 PM CST
Rel. Humidity: 41%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
7 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
41°
Mostly Clear
as of 3:51 PM CST
Rel. Humidity: 44%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: VFR
Wind Data
8 MPH
140° Southeast
Cloud Level(s): Few at 6000ft, Few at 15000ft, Few at 25000ft
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 27. South wind 5 to 8 mph becoming west after midnight.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 39. West wind around 5 mph becoming calm.
30% chance of rain Saturday Night Saturday Night... A 30 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 30. Southeast wind around 6 mph.
30% chance of rain & snow Sunday Sunday... A chance of rain before noon, then a slight chance of rain and snow between noon and 3pm, then a slight chance of snow after 3pm. Mostly cloudy, with a high near 40. South wind 6 to 11 mph becoming north in the afternoon. Chance of precipitation is 30%.
30% chance of snow Sunday Night Sunday Night... A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 18. North wind 6 to 11 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 32.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 22.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 47.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 37.
30% chance of rain Wednesday Wednesday... A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 46.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 26.
Mostly Cloudy on Thursday Thursday... Mostly cloudy, with a high near 41.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 21.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 31.
Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:03 AM
Sunset: 4:38 PM
Civil Sunrise:06:33 AM
Civil Sunset: 5:07 PM
Nautical Sunrise: 06:00 AM
Nautical Sunset: 5:40 PM
Astro Sunrise: 05:28 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.