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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 9:26 pm CST Jan 13, 2026 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday M.L.King Day Tuesday
60% chance of rain on Tonight 20% chance of snow on Wednesday Sunny on Thursday Partly Sunny on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Sunny on M.L.King Day Mostly Sunny on Tuesday
Low: 38°F High: 30 °F High: 32°F High: 43°F High: 25°F High: 29°F High: 33°F High: 31°F
Low: 17°F Low: 33 °F Low: 19°F Low: 10°F Low: 16°F Low: 11°F  
Rain Snow Sunny Partly Sunny Partly Sunny Mostly Sunny Sunny Mostly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
54°
Cloudy
Light Rain
as of 8:55 PM CST
Rel. Humidity: 62%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
22 MPH
Gust: 29 MPH
310° Northwest
Cloud Level(s): Solid Overcast at 5500ft
Current Conditions at
ALTON - (KALN)
48°
Feels like 42°F
Cloudy
Light Rain
as of 8:50 PM CST
Rel. Humidity: 81%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.83 in.
Flight Rule: VFR
Wind Data
13 MPH
260° West
Cloud Level(s): Solid Overcast at 4300ft
Current Conditions at
EAST ST LOUIS - (KCPS)
52°
Cloudy
Light Rain
as of 8:53 PM CST
Rel. Humidity: 66%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.84 in.
Flight Rule: VFR
Wind Data
20 MPH
Gust: 32 MPH
330° Northwest
Cloud Level(s): Solid Overcast at 5500ft
Current Conditions at
ST LOUIS - (KSTL)
48°
Feels like 42°F
Cloudy
Light Rain Mist
as of 8:51 PM CST
Rel. Humidity: 87%
Dew Point: 45°F
Visibility: 6 Miles
Pressure: 29.84 in.
Flight Rule: VFR
Wind Data
13 MPH
290° West
Cloud Level(s): Solid Overcast at 4100ft
60% chance of rain Tonight Tonight... Rain likely, mainly before 11pm. Cloudy, with a low around 38. West wind 8 to 14 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%.

20% chance of snow Wednesday Wednesday... A chance of sprinkles and flurries before 10am, then a chance of flurries between 10am and 11am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 30 by 5pm. Breezy, with a north wind 16 to 23 mph, with gusts as high as 32 mph.

Clear on Wednesday Night Wednesday Night... Clear, with a low around 17. Northwest wind 9 to 15 mph, with gusts as high as 26 mph.

Sunny on Thursday Thursday... Sunny, with a high near 32. Northwest wind 6 to 9 mph becoming south in the afternoon.

30% chance of snow Thursday Night Thursday Night... A 30 percent chance of snow. Mostly cloudy, with a temperature rising to around 33 by 5am. South wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph.

Partly Sunny on Friday Friday... Partly sunny, with a high near 43. Breezy.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 19.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 25.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 10.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 29.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 16.

Sunny on M.L.King Day M.L.King Day... Sunny, with a high near 33.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 11.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 31.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:17 AM
Sunset: 5:00 PM
Civil Sunrise:06:47 AM
Civil Sunset: 5:29 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 6:02 PM
Astro Sunrise: 05:43 AM
Astro Sunset: 6:34 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.