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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 6:56 pm CST Dec 31, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Tonight New Year's Day Friday Saturday Sunday Monday Tuesday Wednesday
Increasing Clouds on Tonight Mostly Sunny on New Year's Day Mostly Cloudy on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday
Low: 26°F High: 38°F High: 42°F High: 40°F High: 43°F High: 57°F High: 60°F High: 53°F
Low: 27°F Low: 28°F Low: 24°F Low: 33°F Low: 40°F Low: 36°F  
Increasing Clouds Mostly Sunny Mostly Cloudy Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
34°
Clear
as of 6:55 PM CST
Rel. Humidity: 80%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
32°
Clear
as of 6:50 PM CST
Rel. Humidity: 86%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
6 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
28°
Clear
as of 6:53 PM CST
Rel. Humidity: 92%
Dew Point: 27°F
Visibility: 9 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
30°
Mostly Clear
as of 6:51 PM CST
Rel. Humidity: 86%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
3 MPH
220° Southwest
Cloud Level(s): Few at 25000ft
Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 26. West wind 5 to 7 mph becoming light and variable.

Mostly Sunny on New Year's Day New Year's Day... Cloudy, then gradually becoming mostly sunny, with a high near 38. North wind 5 to 7 mph becoming calm in the afternoon.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 27. South wind around 5 mph becoming light and variable in the evening.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 42. East wind 3 to 6 mph.

Cloudy on Friday Night Friday Night... Cloudy, with a low around 28. Northeast wind 3 to 6 mph.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 40.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 24.

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

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

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 57.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 40.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 60.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 36.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 53.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:18 AM
Sunset: 4:48 PM
Civil Sunrise:06:48 AM
Civil Sunset: 5:18 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 5:51 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.