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Island Grove, Illinois Weather Forecast
Island Grove, Illinois Weather
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Weather Forecast for Island Grove, Illinois : Jasper County
Issued: 12:36 pm CST Dec 20, 2025 Latitude: 39.1025416 Longitude: -88.3353213 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday Monday Tuesday Wednesday Christmas Day Friday
Partly Sunny on This Afternoon Mostly Clear on Tonight Sunny on Sunday Partly Sunny on Monday Mostly Sunny on Tuesday Cloudy on Wednesday Partly Sunny on Christmas Day Partly Sunny on Friday
High: 51°F Low: 26°F High: 39°F High: 48°F High: 59°F High: 62°F High: 69°F High: 62°F
Low: 25°F Low: 43°F Low: 42°F Low: 56°F Low: 50°F  
Partly Sunny Mostly Clear Sunny Partly Sunny Mostly Sunny Cloudy Partly Sunny Partly Sunny
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Current Conditions at
EFFINGHAM COUNTY MEMORIAL - (K1H2)
54°
Clear
as of 12:55 PM CST
Rel. Humidity: 43%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
13 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
MATTOON - (KMTO)
48°
Feels like 42°F
Clear
as of 12:53 PM CST
Rel. Humidity: 49%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.83 in.
Flight Rule: VFR
Wind Data
14 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
OLNEY-NOBLE AIRPORT - (KOLY)
52°
Clear
as of 12:50 PM CST
Rel. Humidity: 50%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
9 MPH
220° Southwest
Cloud Level(s): Clear
Partly Sunny on This Afternoon This Afternoon... Partly sunny, with a high near 51. Southwest wind 8 to 15 mph becoming west northwest. Winds could gust as high as 26 mph.

Mostly Clear on Tonight Tonight... Mostly cloudy, then gradually becoming mostly clear, with a low around 26. North northwest wind 6 to 9 mph, with gusts as high as 17 mph.

Sunny on Sunday Sunday... Sunny, with a high near 39. North northwest wind around 6 mph becoming east in the afternoon.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 25. Calm wind becoming southeast 5 to 7 mph after midnight.

Partly Sunny on Monday Monday... Partly sunny, with a high near 48. South southeast wind 8 to 11 mph, with gusts as high as 18 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 43. South southwest wind around 9 mph, with gusts as high as 17 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 59. Southwest wind 5 to 9 mph becoming north in the afternoon.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 42.

Cloudy on Wednesday Wednesday... Cloudy, with a high near 62.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 56.

Partly Sunny on Christmas Day Christmas Day... Partly sunny, with a high near 69.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 50.

Partly Sunny on Friday Friday... Partly sunny, with a high near 62.

Sun Almanac for Island Grove, Illinois
Sunrise: 07:09 AM
Sunset: 4:34 PM
Civil Sunrise:06:39 AM
Civil Sunset: 5:04 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 5:37 PM
Astro Sunrise: 05:32 AM
Astro Sunset: 6:10 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.