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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 11:46 am CST Dec 18, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Friday Saturday Sunday Monday Tuesday Wednesday
80% chance of rain on This Afternoon 20% chance of snow on Tonight Sunny on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday Partly Sunny on Monday Partly Sunny on Tuesday 20% chance of rain on Wednesday
High: 56°F Low: 23°F High: 38°F High: 55°F High: 43°F High: 45°F High: 59°F High: 62°F
Low: 31°F Low: 26°F Low: 28°F Low: 40°F Low: 46°F  
Rain Snow Sunny Mostly Sunny Mostly Sunny Partly Sunny Partly Sunny Rain
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Current Conditions at
SCOTT AFB - (KBLV)
54°
Cloudy
Heavy Rain Mist
as of 12:42 PM CST
Rel. Humidity: 87%
Dew Point: 50°F
Visibility: 1 Miles
Pressure: 29.51 in.
Flight Rule: IFR
Wind Data
17 MPH
Gust: 26 MPH
280° West
Cloud Level(s): Broken at 900ft, Broken at 2800ft, Solid Overcast at 3500ft
Current Conditions at
EAST ST LOUIS - (KCPS)
52°
Cloudy
Rain Mist
as of 12:16 PM CST
Rel. Humidity: 81%
Dew Point: 46°F
Visibility: 3 Miles
Pressure: 29.53 in.
Flight Rule: MVFR
Wind Data
20 MPH
Gust: 35 MPH
300° Northwest
Cloud Level(s): Broken at 1700ft, Broken at 2300ft, Solid Overcast at 2900ft
Current Conditions at
ST LOUIS - (KSTL)
45°
Feels like 37°F
Cloudy
Light Rain Mist
as of 12:38 PM CST
Rel. Humidity: 93%
Dew Point: 43°F
Visibility: 6 Miles
Pressure: 29.55 in.
Flight Rule: MVFR
Wind Data
16 MPH
Gust: 25 MPH
290° West
Cloud Level(s): Broken at 1100ft, Solid Overcast at 1500ft
80% chance of rain This Afternoon This Afternoon... Rain, mainly before 3pm. High near 56. West wind 13 to 18 mph decreasing to 6 to 11 mph. Winds could gust as high as 33 mph. Chance of precipitation is 80%.

20% chance of snow Tonight Tonight... A chance of flurries between 9pm and midnight. Mostly cloudy, with a low around 23. Breezy, with a west wind 7 to 12 mph increasing to 19 to 24 mph after midnight. Winds could gust as high as 39 mph.

Sunny on Friday Friday... Sunny, with a high near 38. Northwest wind 7 to 17 mph becoming south in the afternoon. Winds could gust as high as 29 mph.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 31. South wind 8 to 14 mph, with gusts as high as 23 mph.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 55. South wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 26.

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

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

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 40.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 59.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 46.

20% chance of rain Wednesday Wednesday... A 20 percent chance of rain. Mostly cloudy, with a high near 62.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:13 AM
Sunset: 4:40 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:10 PM
Nautical Sunrise: 06:09 AM
Nautical Sunset: 5:43 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:16 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.