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Chapin, Illinois Weather Forecast
Chapin, Illinois Weather
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Weather Forecast for Chapin, Illinois : Macon County
Issued: 3:46 am CST Dec 21, 2025 Latitude: 39.8814248 Longitude: -88.7739613 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Christmas Day Friday Saturday
Sunny on Today Cloudy on Tonight Partly Sunny on Monday Mostly Sunny on Tuesday Cloudy on Wednesday Mostly Cloudy on Christmas Day Partly Sunny on Friday Mostly Cloudy on Saturday
High: 38°F Low: 24°F High: 46°F High: 54°F High: 59°F High: 65°F High: 53°F High: 50°F
Low: 39°F Low: 35°F Low: 52°F Low: 44°F Low: 34°F  
Sunny Cloudy Partly Sunny Mostly Sunny Cloudy Mostly Cloudy Partly Sunny Mostly Cloudy
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Current Conditions at
DECATUR - (KDEC)
27°
Clear
as of 3:54 AM CST
Rel. Humidity: 68%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.32 in.
Flight Rule: VFR
Wind Data
8 MPH
330° Northwest
Cloud Level(s): Clear
Current Conditions at
CHAMPAIGN - (KCMI)
25°
Feels like 15°F
Clear
as of 3:53 AM CST
Rel. Humidity: 73%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.31 in.
Flight Rule: VFR
Wind Data
9 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
LOGAN COUNTY AIRPORT - (KAAA)
25°
Clear
as of 4:15 AM CST
Rel. Humidity: 68%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.33 in.
Flight Rule: VFR
Wind Data
3 MPH
330° Northwest
Cloud Level(s): Clear
Current Conditions at
MATTOON - (KMTO)
25°
Clear
as of 3:53 AM CST
Rel. Humidity: 79%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.30 in.
Flight Rule: VFR
Wind Data
8 MPH
330° Northwest
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 38. North northwest wind 5 to 7 mph becoming calm.

Cloudy on Tonight Tonight... Partly cloudy, with a low around 24. Southeast wind 6 to 11 mph, with gusts as high as 18 mph.

Partly Sunny on Monday Monday... Partly sunny, with a high near 46. South wind 11 to 14 mph, with gusts as high as 22 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 39. South southwest wind 10 to 13 mph, with gusts as high as 18 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 54. Southwest wind 6 to 10 mph becoming north in the afternoon. Winds could gust as high as 15 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 35. North wind 6 to 9 mph becoming east southeast after midnight.

Cloudy on Wednesday Wednesday... Cloudy, with a high near 59. South southeast wind 10 to 13 mph, with gusts as high as 20 mph.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 52.

Mostly Cloudy on Christmas Day Christmas Day... Mostly cloudy, with a high near 65.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 44.

Partly Sunny on Friday Friday... Partly sunny, with a high near 53.

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

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 50.

Current Radar Image


Sun Almanac for Chapin, Illinois
Sunrise: 07:13 AM
Sunset: 4:34 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:04 PM
Nautical Sunrise: 06:09 AM
Nautical Sunset: 5:38 PM
Astro Sunrise: 05:36 AM
Astro Sunset: 6:11 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.