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Vulcan, Illinois Weather Forecast
Vulcan, Illinois Weather
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Weather Forecast for Vulcan, Illinois : St. Clair County
Issued: 12:21 pm CST Dec 17, 2025 Latitude: 38.5289414 Longitude: -90.2423357 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Thursday Friday Saturday Sunday Monday Tuesday
Sunny on This Afternoon Increasing Clouds on Tonight 80% chance of rain on Thursday Sunny on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Partly Sunny on Monday 20% chance of rain on Tuesday
High: 56°F Low: 47 °F High: 55 °F High: 41°F High: 58°F High: 44°F High: 48°F High: 61°F
Low: 24°F Low: 34°F Low: 27°F Low: 30°F Low: 42°F  
Sunny Increasing Clouds Rain Sunny Partly Sunny Mostly Sunny Partly Sunny Rain
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Current Conditions at
EAST ST LOUIS - (KCPS)
55°
Clear
as of 12:53 PM CST
Rel. Humidity: 47%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
54°
Mostly Cloudy
as of 12:51 PM CST
Rel. Humidity: 50%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
5 MPH
150° Southeast
Cloud Level(s): Broken at 25000ft
Current Conditions at
SCOTT AFB - (KBLV)
50°
Mostly Cloudy
as of 12:55 PM CST
Rel. Humidity: 53%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
5 MPH
180° South
Cloud Level(s): Few at 4000ft, Broken at 12000ft
Current Conditions at
SPIRIT OF ST LOUIS - (KSUS)
54°
Clear
as of 12:54 PM CST
Rel. Humidity: 54%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Sunny on This Afternoon This Afternoon... Sunny, with a high near 56. Southeast wind 3 to 6 mph.

Increasing Clouds on Tonight Tonight... Increasing clouds, with a temperature falling to near 47 by 8pm, then rising to around 53 during the remainder of the night. South wind 7 to 16 mph, with gusts as high as 24 mph.

80% chance of rain Thursday Thursday... Showers, mainly before noon. Temperature rising to near 55 by 8am, then falling to around 45 during the remainder of the day. South wind 13 to 17 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 24. West wind 8 to 17 mph, with gusts as high as 30 mph.

Sunny on Friday Friday... Sunny, with a high near 41. West wind 6 to 8 mph becoming south in the afternoon.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 34.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 58.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 27.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 44.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 30.

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

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 42.

20% chance of rain Tuesday Tuesday... A 20 percent chance of rain. Partly sunny, with a high near 61.

Current Radar Image


Sun Almanac for Vulcan, Illinois
Sunrise: 07:13 AM
Sunset: 4:42 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:11 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 5:45 PM
Astro Sunrise: 05:38 AM
Astro Sunset: 6:17 PM
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