Douglas, Illinois Weather
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Weather Forecast for Douglas, Illinois : St. Clair County
Issued: 1:06 am CDT Oct 18, 2025 Latitude: 38.4244948 Longitude: -89.9826053 View on Google Maps

MouseOver for Detail Forecast
Overnight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Mostly Clear on Overnight 90% chance of thunderstorms on Saturday 30% chance of rain on Sunday Sunny on Monday Sunny on Tuesday Sunny on Wednesday 30% chance of rain on Thursday Mostly Sunny on Friday
Low: 62°F High: 77°F High: 64°F High: 73°F High: 64°F High: 65°F High: 69°F High: 67°F
Low: 50°F Low: 42°F Low: 49°F Low: 39°F Low: 45°F Low: 45°F  
Mostly Clear Thunderstorms Rain Sunny Sunny Sunny Rain Mostly Sunny
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Current Conditions at
SCOTT AFB - (KBLV)
66°
Clear
as of 1:55 AM CDST
Rel. Humidity: 82%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.78 in.
Flight Rule: VFR
Wind Data
6 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
SPARTA - (KSAR)
70°
Clear
as of 2:15 AM CDST
Rel. Humidity: 73%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
8 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
70°
Mostly Clear
as of 1:51 AM CDST
Rel. Humidity: 68%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 29.78 in.
Flight Rule: VFR
Wind Data
7 MPH
180° South
Cloud Level(s): Few at 25000ft
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 62. South wind around 8 mph.
90% chance of thunderstorms Saturday Saturday... A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. High near 77. South wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
100% chance of thunderstorms Saturday Night Saturday Night... Showers before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers after 4am. Some of the storms could produce heavy rainfall. Low around 50. Breezy, with a southwest wind 8 to 13 mph becoming northwest 16 to 21 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
30% chance of rain Sunday Sunday... A 30 percent chance of showers before 7am. Mostly cloudy through mid morning, then gradual clearing, with a high near 64. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 31 mph.
Clear on Sunday Night Sunday Night... Clear, with a low around 42. West wind around 6 mph becoming calm.
Sunny on Monday Monday... Sunny, with a high near 73.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 49.
Sunny on Tuesday Tuesday... Sunny, with a high near 64.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 39.
Sunny on Wednesday Wednesday... Sunny, with a high near 65.
20% chance of rain Wednesday Night Wednesday Night... A 20 percent chance of showers. Partly cloudy, with a low around 45.
30% chance of rain Thursday Thursday... A 30 percent chance of showers. Mostly sunny, with a high near 69.
20% chance of rain Thursday Night Thursday Night... A 20 percent chance of showers. Partly cloudy, with a low around 45.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 67.
Current Radar Image


Sun Almanac for Douglas, Illinois
Sunrise: 07:12 AM
Sunset: 6:18 PM
Civil Sunrise:06:46 AM
Civil Sunset: 6:44 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 7:15 PM
Astro Sunrise: 05:44 AM
Astro Sunset: 7:46 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.