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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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No Watches or Warnings for Troy
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Weather Forecast for Troy, Illinois : Madison County
Issued: 3:16 am CST Dec 15, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Sunny on Today Mostly Clear on Tonight Sunny on Tuesday Sunny on Wednesday 70% chance of thunderstorms on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday Partly Sunny on Sunday
High: 37°F Low: 25°F High: 50°F High: 51°F High: 55°F High: 37°F High: 55°F High: 48°F
Low: 33°F Low: 42 °F Low: 19°F Low: 31°F Low: 34°F  
Sunny Mostly Clear Sunny Sunny Thunderstorms Mostly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
10°
Clear
as of 3:55 AM CST
Rel. Humidity: 78%
Dew Point: 5°F
Visibility: 10 Miles
Pressure: 30.52 in.
Flight Rule: VFR
Wind Data
6 MPH
150° Southeast
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
10°
Clear
as of 3:55 AM CST
Rel. Humidity: 72%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 30.50 in.
Flight Rule: VFR
Wind Data
6 MPH
150° Southeast
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
12°
Clear
as of 3:53 AM CST
Rel. Humidity: 66%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 30.52 in.
Flight Rule: VFR
Wind Data
6 MPH
160° South
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
12°
Feels like 0°F
Clear
as of 3:51 AM CST
Rel. Humidity: 61%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.49 in.
Flight Rule: VFR
Wind Data
9 MPH
170° South
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 37. Southwest wind 8 to 14 mph, with gusts as high as 25 mph.

Mostly Clear on Tonight Tonight... Mostly clear, with a low around 25. Southwest wind around 7 mph.

Sunny on Tuesday Tuesday... Sunny, with a high near 50. South wind 7 to 11 mph.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 33. Southwest wind 5 to 10 mph.

Sunny on Wednesday Wednesday... Sunny, with a high near 51. Light and variable wind becoming southeast 5 to 9 mph in the morning.

30% chance of rain Wednesday Night Wednesday Night... A 30 percent chance of rain after midnight. Mostly cloudy, with a temperature falling to near 42 by 8pm, then rising to around 49 during the remainder of the night.

70% chance of thunderstorms Thursday Thursday... Rain likely and possibly a thunderstorm. Partly sunny, with a high near 55. Breezy. Chance of precipitation is 70%.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 19.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 37.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 31.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 55.

20% chance of rain Saturday Night Saturday Night... A 20 percent chance of rain. Mostly cloudy, with a low around 34.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 48.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:11 AM
Sunset: 4:39 PM
Civil Sunrise:06:41 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:08 AM
Nautical Sunset: 5:42 PM
Astro Sunrise: 05:35 AM
Astro Sunset: 6:15 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.