Houston, Illinois Weather
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Weather Forecast for Houston, Illinois : Randolph County
Issued: 5:26 am CDT Sep 16, 2025 Latitude: 38.1592159 Longitude: -89.7812124 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Sunny on Today Mostly Clear on Tonight Sunny on Wednesday Mostly Sunny on Thursday 30% chance of thunderstorms on Friday 30% chance of thunderstorms on Saturday 30% chance of on Sunday 30% chance of thunderstorms on Monday
High: 94°F Low: 64°F High: 93°F High: 95°F High: 89°F High: 85°F High: 86°F High: 87°F
Low: 62°F Low: 66°F Low: 65°F Low: 65°F Low: 66°F  
Sunny Mostly Clear Sunny Mostly Sunny Thunderstorms Thunderstorms Partly Sunny Thunderstorms
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Current Conditions at
SPARTA - (KSAR)
70°
Clear
as of 5:15 AM CDST
Rel. Humidity: 88%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
SCOTT AFB - (KBLV)
68°
Partly Cloudy
as of 4:55 AM CDST
Rel. Humidity: 88%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
3 MPH
030° Northeast
Cloud Level(s): Scattered at 7000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
64°
Clear
as of 4:53 AM CDST
Rel. Humidity: 93%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
64°
Clear
Mist
as of 4:52 AM CDST
Rel. Humidity: 93%
Dew Point: 63°F
Visibility: 4 Miles
Pressure: 30.09 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 94. Calm wind becoming northeast around 6 mph in the afternoon.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 64. Northeast wind 3 to 5 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 93. Light east wind.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 62. Calm wind.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 95. Calm wind becoming south around 6 mph in the afternoon.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 66.
30% chance of thunderstorms Friday Friday... A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Chance of precipitation is 30%.
40% chance of thunderstorms Friday Night Friday Night... A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
30% chance of thunderstorms Saturday Saturday... A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
20% chance of thunderstorms Saturday Night Saturday Night... A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
30% chance of Sunday Sunday... A 30 percent chance of showers. Partly sunny, with a high near 86.
30% chance of thunderstorms Sunday Night Sunday Night... A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
30% chance of thunderstorms Monday Monday... A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Current Radar Image


Sun Almanac for Houston, Illinois
Sunrise: 06:42 AM
Sunset: 7:05 PM
Civil Sunrise:06:16 AM
Civil Sunset: 7:32 PM
Nautical Sunrise: 05:45 AM
Nautical Sunset: 8:03 PM
Astro Sunrise: 05:13 AM
Astro Sunset: 8:34 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.