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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 4:46 pm CST Dec 23, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Christmas Day Friday Saturday Sunday Monday Tuesday
Mostly Cloudy on Tonight 10% chance of  on Wednesday Mostly Cloudy on Christmas Day Mostly Sunny on Friday Partly Sunny on Saturday 20% chance of rain on Sunday Sunny on Monday Mostly Sunny on Tuesday
Low: 43°F High: 63°F High: 64°F High: 72°F High: 72°F High: 47°F High: 27°F High: 35°F
Low: 53°F Low: 57°F Low: 50°F Low: 39°F Low: 17°F Low: 17°F  
Mostly Cloudy Cloudy Mostly Cloudy Mostly Sunny Partly Sunny Rain Sunny Mostly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
63°
Cloudy
as of 4:55 PM CST
Rel. Humidity: 77%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
3 MPH
060° Northeast
Cloud Level(s): Solid Overcast at 3500ft
Current Conditions at
ALTON - (KALN)
55°
Clear
as of 4:50 PM CST
Rel. Humidity: 93%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
3 MPH
330° Northwest
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
59°
Clear
as of 4:53 PM CST
Rel. Humidity: 87%
Dew Point: 55°F
Visibility: 8 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
59°
Partly Cloudy
as of 4:51 PM CST
Rel. Humidity: 82%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 3500ft, Scattered at 25000ft
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 43. Northwest wind around 5 mph becoming light and variable.

10% chance of  Wednesday Wednesday... A slight chance of drizzle between 9am and 2pm. Cloudy, with a high near 63. East wind 5 to 9 mph becoming south in the afternoon.

Morning Fog on Wednesday Night Wednesday Night... Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 53. South wind 5 to 8 mph becoming light and variable after midnight.

Mostly Cloudy on Christmas Day Christmas Day... Mostly cloudy, with a high near 64. Light and variable wind becoming northeast around 6 mph in the morning.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 57. East wind 6 to 8 mph becoming south after midnight.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 72.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 50.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 72.

20% chance of rain Saturday Night Saturday Night... A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 39.

20% chance of rain Sunday Sunday... A 20 percent chance of rain. Mostly cloudy, with a high near 47.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 17.

Sunny on Monday Monday... Sunny, with a high near 27.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 17.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 35.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:15 AM
Sunset: 4:42 PM
Civil Sunrise:06:45 AM
Civil Sunset: 5:12 PM
Nautical Sunrise: 06:12 AM
Nautical Sunset: 5:46 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:18 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.