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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 10:31 am CST Jan 25, 2026 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
100% chance of snow on Today Clearing on Tonight Sunny on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday Partly Sunny on Thursday Partly Sunny on Friday Mostly Sunny on Saturday
High: 14°F Low: -7°F High: 14°F High: 30°F High: 23°F High: 19°F High: 21°F High: 20°F
Low: 3 °F Low: -3°F Low: 0°F Low: 6°F Low: 3°F  
Snow Clearing Sunny Mostly Sunny Mostly Sunny Partly Sunny Partly Sunny Mostly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
10°
Feels like -6°F
Cloudy
Blowing Snow
as of 10:55 AM CST
Rel. Humidity: 78%
Dew Point: 5°F
Visibility: 1 Miles
Pressure: 30.08 in.
Flight Rule: IFR
Wind Data
16 MPH
330° Northwest
Cloud Level(s): Solid Overcast at 3400ft
Current Conditions at
ALTON - (KALN)
10°
Feels like -6°F
Cloudy
Light Snow
as of 10:45 AM CST
Rel. Humidity: 66%
Dew Point: 1°F
Visibility: 2 Miles
Pressure: 30.13 in.
Flight Rule: IFR
Wind Data
16 MPH
340° North
Cloud Level(s): Solid Overcast at 3100ft
Current Conditions at
EAST ST LOUIS - (KCPS)
Feels like -8°F
Cloudy
Light Snow
as of 10:53 AM CST
Rel. Humidity: 78%
Dew Point: 3°F
Visibility: 1 1/4 Miles
Pressure: 30.12 in.
Flight Rule: IFR
Wind Data
16 MPH
340° North
Cloud Level(s): Broken at 2000ft, Broken at 2500ft, Solid Overcast at 3000ft
Current Conditions at
ST LOUIS - (KSTL)
Feels like -8°F
Cloudy
Light Snow
as of 10:51 AM CST
Rel. Humidity: 71%
Dew Point: 1°F
Visibility: 3 Miles
Pressure: 30.12 in.
Flight Rule: MVFR
Wind Data
16 MPH
Gust: 24 MPH
350° North
Cloud Level(s): Few at 2500ft, Broken at 3000ft, Solid Overcast at 3900ft
100% chance of snow Today Today... Snow, mainly before 3pm. High near 14. Northwest wind 15 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 3 to 5 inches possible.

Clearing on Tonight Tonight... Mostly cloudy during the early evening, then gradual clearing, with a low around -7. Wind chill values as low as -25. Northwest wind 9 to 13 mph, with gusts as high as 23 mph.

Sunny on Monday Monday... Sunny and cold, with a high near 14. Wind chill values as low as -25. Northwest wind 8 to 11 mph.

Clear on Monday Night Monday Night... Clear, with a temperature falling to near 3 by 9pm, then rising to around 11 during the remainder of the night. Wind chill values as low as -10. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 30. Southwest wind 7 to 11 mph becoming northwest in the afternoon.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around -3.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 23.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 0.

Partly Sunny on Thursday Thursday... Partly sunny and cold, with a high near 19.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 6.

Partly Sunny on Friday Friday... Partly sunny, with a high near 21.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 3.

Mostly Sunny on Saturday Saturday... Mostly sunny and cold, with a high near 20.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:11 AM
Sunset: 5:13 PM
Civil Sunrise:06:42 AM
Civil Sunset: 5:42 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 6:14 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:45 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.