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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: 4:01 am CST Dec 16, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Sunny on Today Cloudy on Tonight Sunny on Wednesday 80% chance of rain & snow on Thursday Sunny on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday Partly Sunny on Monday
High: 50°F Low: 32°F High: 53°F High: 41 °F High: 36°F High: 54°F High: 46°F High: 47°F
Low: 43 °F Low: 20°F Low: 30°F Low: 31°F Low: 31°F  
Sunny Cloudy Sunny Rain & Snow Sunny Mostly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
30°
Clear
as of 7:55 AM CST
Rel. Humidity: 58%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
6 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
30°
Feels like 21°F
Clear
as of 7:50 AM CST
Rel. Humidity: 58%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
9 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
25°
Clear
as of 7:53 AM CST
Rel. Humidity: 73%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
32°
Mostly Clear
as of 7:51 AM CST
Rel. Humidity: 59%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.07 in.
Flight Rule: VFR
Wind Data
8 MPH
200° South
Cloud Level(s): Few at 25000ft
Sunny on Today Today... Sunny, with a high near 50. South wind 7 to 13 mph, with gusts as high as 21 mph.

Cloudy on Tonight Tonight... Partly cloudy, with a low around 32. South wind 6 to 10 mph becoming west after midnight.

Sunny on Wednesday Wednesday... Sunny, with a high near 53. Light and variable wind becoming southeast 5 to 9 mph in the afternoon.

30% chance of rain Wednesday Night Wednesday Night... A 30 percent chance of rain after midnight. Increasing clouds, with a temperature falling to near 43 by 8pm, then rising to around 51 during the remainder of the night. South wind 10 to 18 mph.

80% chance of rain & snow Thursday Thursday... Rain before 3pm, then a chance of rain and snow. Temperature falling to around 41 by 5pm. Breezy, with a south wind 17 to 23 mph becoming west in the morning. Winds could gust as high as 33 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 20. Breezy.

Sunny on Friday Friday... Sunny, with a high near 36.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 30.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 54.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 31.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 46.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 31.

Partly Sunny on Monday Monday... Partly sunny, with a high near 47.

Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 07:11 AM
Sunset: 4:39 PM
Civil Sunrise:06:42 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:08 AM
Nautical Sunset: 5:43 PM
Astro Sunrise: 05:36 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.