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Troy, Illinois Weather Forecast
Troy, Illinois Weather
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Weather Forecast for Troy, Illinois : Madison County
Issued: 9:06 am CST Nov 21, 2025 Latitude: 38.7292147 Longitude: -89.8831541 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Saturday Sunday Monday Tuesday Wednesday Thanksgiving Day
100% chance of rain on Today 60% chance of rain on Tonight Sunny on Saturday Sunny on Sunday 60% chance of rain on Monday 20% chance of rain on Tuesday Mostly Sunny on Wednesday Mostly Sunny on Thanksgiving Day
High: 56°F Low: 44°F High: 57°F High: 62°F High: 59°F High: 62°F High: 48°F High: 44°F
Low: 38°F Low: 43°F Low: 50°F Low: 36°F Low: 27°F  
Rain Rain Sunny Sunny Rain Rain Mostly Sunny Mostly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
57°
Cloudy
Light Rain Mist
as of 10:20 AM CST
Rel. Humidity: 93%
Dew Point: 55°F
Visibility: 1 1/8 Miles
Pressure: 29.92 in.
Flight Rule: LIFR
Wind Data
5 MPH
110° East
Cloud Level(s): Solid Overcast at 200ft
Current Conditions at
ALTON - (KALN)
54°
Cloudy
Light Rain
as of 9:50 AM CST
Rel. Humidity: 93%
Dew Point: 52°F
Visibility: 5 Miles
Pressure: 29.96 in.
Flight Rule: LIFR
Wind Data
12 MPH
090° East
Cloud Level(s): Solid Overcast at 400ft
Current Conditions at
EAST ST LOUIS - (KCPS)
55°
Cloudy
Rain Mist
as of 10:34 AM CST
Rel. Humidity: 100%
Dew Point: 55°F
Visibility: 1 1/2 Miles
Pressure: 29.93 in.
Flight Rule: IFR
Wind Data
5 MPH
130° Southeast
Cloud Level(s): Scattered at 500ft, Solid Overcast at 1300ft
Current Conditions at
ST LOUIS - (KSTL)
55°
Cloudy
Light Rain Mist
as of 10:17 AM CST
Rel. Humidity: 93%
Dew Point: 54°F
Visibility: 4 Miles
Pressure: 29.94 in.
Flight Rule: LIFR
Wind Data
6 MPH
100° East
Cloud Level(s): Solid Overcast at 400ft
100% chance of rain Today Today... Rain, mainly before 2pm. Patchy fog before noon. High near 56. Northeast wind 6 to 8 mph. Chance of precipitation is 100%.
60% chance of rain Tonight Tonight... Rain likely, mainly before 4am. Patchy fog between midnight and 1am. Otherwise, cloudy, with a low around 44. North wind 6 to 8 mph. Chance of precipitation is 60%.
Sunny on Saturday Saturday... Sunny, with a high near 57. North wind around 6 mph becoming light and variable in the afternoon.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 38. Calm wind.
Sunny on Sunday Sunday... Sunny, with a high near 62. Calm wind becoming west around 5 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 43.
60% chance of rain Monday Monday... Rain likely, mainly after noon. Cloudy, with a high near 59. Chance of precipitation is 60%.
80% chance of rain Monday Night Monday Night... Rain, mainly before midnight. Low around 50. Chance of precipitation is 80%.
20% chance of rain Tuesday Tuesday... A 20 percent chance of rain. Partly sunny, with a high near 62.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 36.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 48.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 27.
Mostly Sunny on Thanksgiving Day Thanksgiving Day... Mostly sunny, with a high near 44.
Current Radar Image


Sun Almanac for Troy, Illinois
Sunrise: 06:49 AM
Sunset: 4:42 PM
Civil Sunrise:06:20 AM
Civil Sunset: 5:11 PM
Nautical Sunrise: 05:48 AM
Nautical Sunset: 5:43 PM
Astro Sunrise: 05:16 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.