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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 4:41 am CST Dec 25, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Christmas Day Tonight Friday Saturday Sunday Monday Tuesday Wednesday
Morning Fog on Christmas Day Mostly Cloudy on Tonight Mostly Sunny on Friday Mostly Cloudy on Saturday 70% chance of thunderstorms on Sunday Sunny on Monday Sunny on Tuesday Partly Sunny on Wednesday
High: 65°F Low: 57°F High: 69°F High: 66°F High: 66°F High: 27°F High: 34°F High: 42°F
  Low: 46°F Low: 57°F Low: 20°F Low: 17°F Low: 23°F  
Morning Fog Mostly Cloudy Mostly Sunny Mostly Cloudy Thunderstorms Sunny Sunny Partly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
55°
Cloudy
Mist
as of 6:25 AM CST
Rel. Humidity: 93%
Dew Point: 54°F
Visibility: 3 Miles
Pressure: 30.05 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Broken at 2100ft, Solid Overcast at 2700ft
Current Conditions at
ALTON - (KALN)
54°
Cloudy
Mist
as of 6:15 AM CST
Rel. Humidity: 100%
Dew Point: 54°F
Visibility: 3/4 Miles
Pressure: 30.07 in.
Flight Rule: LIFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 300ft
Current Conditions at
EAST ST LOUIS - (KCPS)
55°
Cloudy
Mist
as of 5:53 AM CST
Rel. Humidity: 100%
Dew Point: 55°F
Visibility: 5 Miles
Pressure: 30.05 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 1700ft
Current Conditions at
ST LOUIS - (KSTL)
54°
Cloudy
Mist
as of 6:03 AM CST
Rel. Humidity: 100%
Dew Point: 54°F
Visibility: 2 1/2 Miles
Pressure: 30.06 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Scattered at 300ft, Broken at 1400ft, Solid Overcast at 2300ft
Morning Fog on Christmas Day Christmas Day... Widespread dense fog, mainly before 10am. Otherwise, cloudy, with a high near 65. Calm wind becoming east around 6 mph in the afternoon.

Mostly Cloudy on Tonight Tonight... 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 69. Southwest wind 6 to 11 mph becoming northwest in the afternoon.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 46. Northwest wind around 5 mph becoming calm in the evening.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 66. Light east wind becoming southeast 5 to 10 mph in the morning.

20% chance of rain Saturday Night Saturday Night... A 20 percent chance of rain after midnight. Cloudy, with a low around 57.

70% chance of thunderstorms Sunday Sunday... A chance of rain, then rain likely and possibly a thunderstorm after noon. Cloudy, with a high near 66. Chance of precipitation is 70%.

40% chance of rain & snow Sunday Night Sunday Night... A chance of rain and snow before midnight. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 40%.

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

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

Sunny on Tuesday Tuesday... Sunny, with a high near 34.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 23.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 42.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:16 AM
Sunset: 4:44 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:14 PM
Nautical Sunrise: 06:13 AM
Nautical Sunset: 5:47 PM
Astro Sunrise: 05:40 AM
Astro Sunset: 6:19 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.