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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 4:56 pm CST Jan 23, 2026 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Cloudy on Tonight 90% chance of snow on Saturday 90% chance of snow on Sunday Mostly Sunny on Monday Sunny on Tuesday Partly Sunny on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday
Low: 4 °F High: 12°F High: 16°F High: 14°F High: 30°F High: 23°F High: 18°F High: 21°F
Low: 10°F Low: 0 °F Low: 2°F Low: 5°F Low: 4°F Low: 4°F  
Cloudy Snow Snow Mostly Sunny Sunny Partly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
Feels like -8°F
Mostly Clear
as of 4:55 PM CST
Rel. Humidity: 32%
Dew Point: -17°F
Visibility: 10 Miles
Pressure: 30.69 in.
Flight Rule: VFR
Wind Data
12 MPH
030° Northeast
Cloud Level(s): Few at 18000ft
Current Conditions at
ALTON - (KALN)
Feels like -10°F
Mostly Cloudy
as of 4:50 PM CST
Rel. Humidity: 26%
Dew Point: -20°F
Visibility: 10 Miles
Pressure: 30.70 in.
Flight Rule: VFR
Wind Data
14 MPH
010° North
Cloud Level(s): Broken at 9000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
Feels like -10°F
Clear
as of 4:53 PM CST
Rel. Humidity: 29%
Dew Point: -18°F
Visibility: 10 Miles
Pressure: 30.70 in.
Flight Rule: VFR
Wind Data
14 MPH
030° Northeast
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
Feels like -12°F
Mostly Cloudy
as of 4:51 PM CST
Rel. Humidity: 31%
Dew Point: -18°F
Visibility: 10 Miles
Pressure: 30.69 in.
Flight Rule: VFR
Wind Data
15 MPH
020° North
Cloud Level(s): Scattered at 9500ft, Broken at 25000ft
Cloudy on Tonight Tonight... Cloudy, with a low around 4. Wind chill values as low as -10. Northeast wind 11 to 14 mph, with gusts as high as 21 mph.

90% chance of snow Saturday Saturday... Snow, mainly after 1pm. High near 12. Wind chill values as low as -10. Northeast wind around 11 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

100% chance of snow Saturday Night Saturday Night... Snow. The snow could be heavy at times. Low around 10. Northeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

90% chance of snow Sunday Sunday... Snow. High near 16. North wind 11 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

20% chance of snow Sunday Night Sunday Night... A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 0. Northwest wind 10 to 14 mph.

Mostly Sunny on Monday Monday... Mostly sunny and cold, with a high near 14.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 2.

Sunny on Tuesday Tuesday... Sunny, with a high near 30.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 5.

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

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 4.

Mostly Sunny on Thursday Thursday... Mostly sunny and cold, with a high near 18.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 4.

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

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:12 AM
Sunset: 5:11 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:39 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 6:12 PM
Astro Sunrise: 05:40 AM
Astro Sunset: 6:43 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.