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Houston, Illinois Weather Forecast
Houston, Illinois Weather
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Weather Forecast for Houston, Illinois : Randolph County
Issued: 2:21 am CST Dec 21, 2025 Latitude: 38.1592159 Longitude: -89.7812124 View on Google Maps

MouseOver for Detail Forecast
Overnight Sunday Monday Tuesday Wednesday Christmas Day Friday Saturday
Mostly Cloudy on Overnight Partly Sunny on Sunday Increasing Clouds on Monday Sunny on Tuesday Cloudy on Wednesday Partly Sunny on Christmas Day Mostly Sunny on Friday Mostly Cloudy on Saturday
Low: 27°F High: 44°F High: 50°F High: 63°F High: 69°F High: 73°F High: 62°F High: 59°F
Low: 30°F Low: 46°F Low: 47°F Low: 58°F Low: 52°F Low: 42°F  
Mostly Cloudy Partly Sunny Increasing Clouds Sunny Cloudy Partly Sunny Mostly Sunny Mostly Cloudy
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Current Conditions at
SPARTA - (KSAR)
34°
Clear
as of 2:35 AM CST
Rel. Humidity: 55%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.33 in.
Flight Rule: VFR
Wind Data
5 MPH
340° North
Cloud Level(s): Clear
Current Conditions at
SCOTT AFB - (KBLV)
28°
Clear
as of 1:55 AM CST
Rel. Humidity: 68%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.31 in.
Flight Rule: VFR
Wind Data
5 MPH
0° North
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
30°
Clear
as of 1:53 AM CST
Rel. Humidity: 58%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.31 in.
Flight Rule: VFR
Wind Data
3 MPH
0° North
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
30°
Clear
as of 1:52 AM CST
Rel. Humidity: 80%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.30 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a low around 27. North wind 3 to 5 mph.
Partly Sunny on Sunday Sunday... Partly sunny, then gradually becoming sunny, with a high near 44. Light and variable wind becoming northeast around 5 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 30. Calm wind becoming southeast around 6 mph after midnight.
Increasing Clouds on Monday Monday... Increasing clouds, with a high near 50. South wind 6 to 10 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 46. Southwest wind 6 to 9 mph.
Sunny on Tuesday Tuesday... Sunny, with a high near 63.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 47.
Cloudy on Wednesday Wednesday... Cloudy, with a high near 69.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 58.
Partly Sunny on Christmas Day Christmas Day... Partly sunny, with a high near 73.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 52.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 62.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 42.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 59.
Current Radar Image


Sun Almanac for Houston, Illinois
Sunrise: 07:12 AM
Sunset: 4:43 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:12 PM
Nautical Sunrise: 06:09 AM
Nautical Sunset: 5:45 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:18 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.