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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 11:36 pm CST Jan 5, 2026 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Mostly Cloudy on Overnight Mostly Sunny on Tuesday Mostly Sunny on Wednesday 90% chance of rain on Thursday 40% chance of rain on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Sunny on Monday
Low: 47°F High: 59°F High: 58°F High: 60°F High: 62°F High: 44°F High: 37°F High: 47°F
Low: 36°F Low: 43°F Low: 54°F Low: 37°F Low: 25°F Low: 24°F  
Mostly Cloudy Mostly Sunny Mostly Sunny Rain Rain Partly Sunny Mostly Sunny Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
50°
Feels like 46°F
Clear
as of 11:55 PM CST
Rel. Humidity: 81%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.70 in.
Flight Rule: VFR
Wind Data
9 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
48°
Clear
as of 11:55 PM CST
Rel. Humidity: 81%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.70 in.
Flight Rule: VFR
Wind Data
8 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
54°
Clear
as of 11:53 PM CST
Rel. Humidity: 71%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.70 in.
Flight Rule: VFR
Wind Data
9 MPH
Gust: 18 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
52°
Partly Cloudy
as of 11:51 PM CST
Rel. Humidity: 76%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.68 in.
Flight Rule: VFR
Wind Data
13 MPH
200° South
Cloud Level(s): Few at 20000ft, Scattered at 25000ft
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a low around 47. South wind around 10 mph, with gusts as high as 20 mph.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 59. West wind 9 to 14 mph, with gusts as high as 22 mph.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 36. Northwest wind 5 to 8 mph becoming calm after midnight.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 58. Calm wind becoming south 5 to 8 mph in the morning.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 43. South wind around 8 mph.
90% chance of rain Thursday Thursday... Rain. High near 60. Chance of precipitation is 90%.
70% chance of thunderstorms Thursday Night Thursday Night... Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
40% chance of rain Friday Friday... A 40 percent chance of rain, mainly after noon. Partly sunny, with a high near 62.
30% chance of rain Friday Night Friday Night... A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 37.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 44.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 25.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 37.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 24.
Sunny on Monday Monday... Sunny, with a high near 47.
Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:18 AM
Sunset: 4:53 PM
Civil Sunrise:06:48 AM
Civil Sunset: 5:23 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 5:56 PM
Astro Sunrise: 05:43 AM
Astro Sunset: 6:28 PM
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