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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 12:51 am CST Dec 30, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday New Year's Day Friday Saturday Sunday Monday
Cloudy on Overnight Increasing Clouds on Tuesday Partly Sunny on Wednesday Mostly Sunny on New Year's Day Mostly Cloudy on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday
Low: 17°F High: 34°F High: 42°F High: 38°F High: 46°F High: 43°F High: 47°F High: 50°F
Low: 28°F Low: 25°F Low: 28°F Low: 28°F Low: 27°F Low: 33°F  
Cloudy Increasing Clouds Partly Sunny Mostly Sunny Mostly Cloudy Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
19°
Feels like 7°F
Clear
as of 12:55 AM CST
Rel. Humidity: 73%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.38 in.
Flight Rule: VFR
Wind Data
12 MPH
290° West
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
18°
Feels like 6°F
Clear
as of 1:15 AM CST
Rel. Humidity: 78%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.39 in.
Flight Rule: VFR
Wind Data
9 MPH
290° West
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
19°
Feels like 5°F
Mostly Clear
as of 12:51 AM CST
Rel. Humidity: 73%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.39 in.
Flight Rule: VFR
Wind Data
15 MPH
290° West
Cloud Level(s): Few at 2700ft
Cloudy on Overnight Overnight... Partly cloudy, with a low around 17. Northwest wind around 11 mph.

Increasing Clouds on Tuesday Tuesday... Increasing clouds, with a high near 34. West wind 8 to 11 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 28. Southwest wind 7 to 10 mph.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 42. West wind 7 to 10 mph.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 25. West wind around 6 mph becoming light and variable.

Mostly Sunny on New Year's Day New Year's Day... Mostly sunny, with a high near 38.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 28.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 46.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 28.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 43.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 27.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 47.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 33.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 50.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:17 AM
Sunset: 4:47 PM
Civil Sunrise:06:48 AM
Civil Sunset: 5:17 PM
Nautical Sunrise: 06:14 AM
Nautical Sunset: 5:50 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 6:23 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.