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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 10:51 am CST Dec 30, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Wednesday New Year's Day Friday Saturday Sunday Monday
Cloudy on This Afternoon Clearing on Tonight Mostly Cloudy on Wednesday Mostly Sunny on New Year's Day Mostly Cloudy on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday Sunny on Monday
High: 34°F Low: 27°F High: 42°F High: 37°F High: 44°F High: 42°F High: 49°F High: 49°F
Low: 25°F Low: 28°F Low: 26°F Low: 27°F Low: 32°F  
Cloudy Clearing Mostly Cloudy Mostly Sunny Mostly Cloudy Mostly Sunny Mostly Sunny Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
34°
Feels like 26°F
Mostly Cloudy
as of 1:55 PM CST
Rel. Humidity: 40%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
9 MPH
240° Southwest
Cloud Level(s): Scattered at 8000ft, Broken at 9500ft
Current Conditions at
ALTON - (KALN)
32°
Feels like 24°F
Mostly Cloudy
as of 1:45 PM CST
Rel. Humidity: 43%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
9 MPH
260° West
Cloud Level(s): Broken at 7500ft, Broken at 9000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
34°
Feels like 26°F
Cloudy
as of 1:53 PM CST
Rel. Humidity: 40%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
9 MPH
240° Southwest
Cloud Level(s): Solid Overcast at 9000ft
Current Conditions at
ST LOUIS - (KSTL)
34°
Feels like 24°F
Mostly Cloudy
as of 1:51 PM CST
Rel. Humidity: 40%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
14 MPH
230° Southwest
Cloud Level(s): Scattered at 8000ft, Broken at 10000ft, Broken at 25000ft
Cloudy on This Afternoon This Afternoon... Cloudy, with a high near 34. West wind 7 to 10 mph.

Clearing on Tonight Tonight... Mostly cloudy during the early evening, then gradual clearing, with a low around 27. Southwest wind 6 to 9 mph.

Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 42. West wind 7 to 11 mph, with gusts as high as 20 mph.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 25. West wind 5 to 7 mph becoming north after midnight.

Mostly Sunny on New Year's Day New Year's Day... Mostly sunny, with a high near 37. North wind around 6 mph becoming calm in the afternoon.

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 44.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 26.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 42.

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

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 49.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 32.

Sunny on Monday Monday... Sunny, with a high near 49.

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
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