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Chester, Illinois Weather Forecast
Chester, Illinois Weather
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Weather Forecast for Chester, Illinois : Randolph County
Issued: 12:41 am CST Nov 5, 2025 Latitude: 37.9136628 Longitude: -89.8220505 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Veterans Day
Mostly Clear on Overnight Sunny on Wednesday Sunny on Thursday 40% chance of thunderstorms on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday Sunny on Monday Sunny on Veterans Day
Low: 51°F High: 70°F High: 65°F High: 73°F High: 67°F High: 45°F High: 44°F High: 54°F
Low: 40°F Low: 52°F Low: 44°F Low: 38°F Low: 25°F Low: 27°F  
Mostly Clear Sunny Sunny Thunderstorms Mostly Sunny Mostly Sunny Sunny Sunny
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Current Conditions at
SPARTA - (KSAR)
59°
Clear
as of 12:35 AM CST
Rel. Humidity: 67%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 30.07 in.
Flight Rule: VFR
Wind Data
9 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
61°
Clear
as of 11:52 PM CST
Rel. Humidity: 59%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
15 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
FARMINGTON ARPT - (KFAM)
55°
Clear
as of 11:56 PM CST
Rel. Humidity: 71%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
12 MPH
210° Southwest
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 51. South wind around 10 mph, with gusts as high as 20 mph.

Sunny on Wednesday Wednesday... Sunny, with a high near 70. South wind 8 to 11 mph becoming north in the afternoon. Winds could gust as high as 21 mph.

Clear on Wednesday Night Wednesday Night... Clear, with a low around 40. North wind 5 to 7 mph becoming light and variable after midnight.

Sunny on Thursday Thursday... Sunny, with a high near 65. Light and variable wind becoming southeast 5 to 10 mph in the morning.

20% chance of rain Thursday Night Thursday Night... A 20 percent chance of rain after midnight. Partly cloudy, with a low around 52. Southeast wind 8 to 11 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

40% chance of thunderstorms Friday Friday... A 40 percent chance of rain and thunderstorms, mainly before noon. Mostly sunny, with a high near 73.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 44.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 67.

20% chance of rain Saturday Night Saturday Night... A 20 percent chance of rain before midnight. Partly cloudy, with a low around 38.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 45.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 25.

Sunny on Monday Monday... Sunny, with a high near 44.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 27.

Sunny on Veterans Day Veterans Day... Sunny, with a high near 54.

Sun Almanac for Chester, Illinois
Sunrise: 06:30 AM
Sunset: 4:56 PM
Civil Sunrise:06:02 AM
Civil Sunset: 5:24 PM
Nautical Sunrise: 05:31 AM
Nautical Sunset: 5:55 PM
Astro Sunrise: 05:00 AM
Astro Sunset: 6:26 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.