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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 8:01 am CST Nov 28, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Sunny on Today 90% chance of snow on Tonight 100% chance of rain, snow, & sleet on Saturday Mostly Cloudy on Sunday 20% chance of snow on Monday Partly Sunny on Tuesday Partly Sunny on Wednesday Partly Sunny on Thursday
High: 38°F Low: 30°F High: 38°F High: 30°F High: 28°F High: 30°F High: 38°F High: 33°F
Low: 25°F Low: 16°F Low: 18°F Low: 18°F Low: 22°F  
Sunny Snow Rain, Snow, & Sleet Mostly Cloudy Snow Partly Sunny Partly Sunny Partly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
34°
Clear
as of 9:55 AM CST
Rel. Humidity: 59%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.49 in.
Flight Rule: VFR
Wind Data
6 MPH
060° Northeast
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
30°
Clear
as of 9:50 AM CST
Rel. Humidity: 58%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.50 in.
Flight Rule: VFR
Wind Data
5 MPH
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
30°
Clear
as of 9:53 AM CST
Rel. Humidity: 58%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.50 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
30°
Mostly Clear
as of 9:51 AM CST
Rel. Humidity: 58%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.51 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 25000ft
Sunny on Today Today... Sunny, with a high near 38. Northwest wind around 5 mph becoming calm.
90% chance of snow Tonight Tonight... Snow, mainly after 4am. Low around 30. Light southeast wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
100% chance of rain, snow, & sleet Saturday Saturday... Rain, possibly mixed with snow and sleet, becoming all rain after 3pm. High near 38. Breezy, with a southeast wind 14 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 2 to 4 inches possible.
80% chance of rain & snow Saturday Night Saturday Night... Rain, mixing with snow after 9pm, then gradually ending. Low around 25. South wind 14 to 18 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Mostly Cloudy on Sunday Sunday... Mostly cloudy, with a high near 30. Northwest wind 10 to 17 mph, with gusts as high as 25 mph.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 16.
20% chance of snow Monday Monday... A 20 percent chance of snow after noon. Mostly cloudy, with a high near 28.
40% chance of snow Monday Night Monday Night... A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 30.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 18.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 38.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 22.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 33.
Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 06:56 AM
Sunset: 4:39 PM
Civil Sunrise:06:27 AM
Civil Sunset: 5:08 PM
Nautical Sunrise: 05:54 AM
Nautical Sunset: 5:41 PM
Astro Sunrise: 05:22 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.