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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 am CST Dec 17, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Mostly Cloudy on Overnight Partly Sunny on Wednesday 100% chance of rain on Thursday Sunny on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Partly Sunny on Monday Partly Sunny on Tuesday
Low: 36°F High: 54°F High: 55 °F High: 38°F High: 55°F High: 45°F High: 45°F High: 55°F
Low: 51 °F Low: 23°F Low: 31°F Low: 29°F Low: 29°F Low: 37°F  
Mostly Cloudy Partly Sunny Rain Sunny Partly Sunny Mostly Sunny Partly Sunny Partly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
39°
Clear
as of 2:55 AM CST
Rel. Humidity: 55%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
6 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
36°
Clear
as of 2:55 AM CST
Rel. Humidity: 69%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
7 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
45°
Clear
as of 2:53 AM CST
Rel. Humidity: 45%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
6 MPH
230° Southwest
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
39°
Mostly Cloudy
as of 2:51 AM CST
Rel. Humidity: 69%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
8 MPH
240° Southwest
Cloud Level(s): Broken at 21000ft
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a low around 36. Southwest wind around 6 mph.

Partly Sunny on Wednesday Wednesday... Partly sunny through mid morning, then becoming sunny, with a high near 54. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.

20% chance of rain Wednesday Night Wednesday Night... A 20 percent chance of rain after 4am. Increasing clouds, with a temperature rising to around 51 by 5am. South wind 8 to 18 mph, with gusts as high as 31 mph.

100% chance of rain Thursday Thursday... Rain, mainly before noon. Temperature rising to near 55 by 10am, then falling to around 44 during the remainder of the day. Breezy, with a south wind 16 to 21 mph becoming west in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 100%.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 23. Breezy, with a west wind 11 to 21 mph, with gusts as high as 31 mph.

Sunny on Friday Friday... Sunny, with a high near 38.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 31.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 55.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 29.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 45.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 29.

Partly Sunny on Monday Monday... Partly sunny, with a high near 45.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 37.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 55.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:12 AM
Sunset: 4:40 PM
Civil Sunrise:06:42 AM
Civil Sunset: 5:10 PM
Nautical Sunrise: 06:09 AM
Nautical Sunset: 5:43 PM
Astro Sunrise: 05:36 AM
Astro Sunset: 6:15 PM
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