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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 4:46 am CST Jan 8, 2026 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Friday Saturday Sunday Monday Tuesday Wednesday
80% chance of thunderstorms on Today 80% chance of thunderstorms on Tonight Partly Sunny on Friday 20% chance of rain on Saturday Mostly Sunny on Sunday Sunny on Monday Partly Sunny on Tuesday Mostly Cloudy on Wednesday
High: 64°F Low: 47°F High: 53°F High: 45°F High: 34°F High: 48°F High: 54°F High: 43°F
Low: 39°F Low: 24°F Low: 23°F Low: 34°F Low: 35°F  
Thunderstorms Thunderstorms Partly Sunny Rain Mostly Sunny Sunny Partly Sunny Mostly Cloudy
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Current Conditions at
SCOTT AFB - (KBLV)
46°
Clear
as of 4:55 AM CST
Rel. Humidity: 87%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
6 MPH
150° Southeast
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
48°
Feels like 44°F
Clear
as of 4:55 AM CST
Rel. Humidity: 76%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.83 in.
Flight Rule: VFR
Wind Data
9 MPH
120° Southeast
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
48°
Clear
as of 4:53 AM CST
Rel. Humidity: 76%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
8 MPH
160° South
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
50°
Cloudy
as of 4:51 AM CST
Rel. Humidity: 76%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
7 MPH
140° Southeast
Cloud Level(s): Broken at 17000ft, Solid Overcast at 25000ft
80% chance of thunderstorms Today Today... A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 4pm. Patchy fog between 8am and 9am. High near 64. Breezy, with a south wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 80%.

80% chance of thunderstorms Tonight Tonight... Rain and possibly a thunderstorm before 3am, then a slight chance of rain between 3am and 5am. Low around 47. Breezy, with a south wind 15 to 22 mph becoming west after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 80%.

Partly Sunny on Friday Friday... Partly sunny, with a high near 53. West wind 6 to 16 mph becoming north in the afternoon. Winds could gust as high as 28 mph.

30% chance of rain Friday Night Friday Night... A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 39. Northeast wind 3 to 8 mph.

20% chance of rain Saturday Saturday... A 20 percent chance of rain before noon. Partly sunny, with a high near 45. Northwest wind 9 to 16 mph, with gusts as high as 23 mph.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 24.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 34.

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

Sunny on Monday Monday... Sunny, with a high near 48.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 34.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 54.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 35.

Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 43.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:18 AM
Sunset: 4:55 PM
Civil Sunrise:06:48 AM
Civil Sunset: 5:24 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 5:57 PM
Astro Sunrise: 05:43 AM
Astro Sunset: 6:30 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.