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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: 6:36 am CST Jan 21, 2026 Latitude: 39.1025416 Longitude: -88.3353213 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thursday Friday Saturday Sunday Monday Tuesday
Mostly Cloudy on Today Mostly Clear on Tonight Partly Sunny on Thursday Mostly Cloudy on Friday 40% chance of snow on Saturday Partly Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday
High: 43°F Low: 21°F High: 34°F High: 12°F High: 13°F High: 18°F High: 19°F High: 29°F
Low: 7 °F Low: 1 °F Low: 8°F Low: 4°F Low: 6°F  
Mostly Cloudy Mostly Clear Partly Sunny Mostly Cloudy Snow Partly Sunny Sunny Mostly Sunny
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Current Conditions at
EFFINGHAM COUNTY MEMORIAL - (K1H2)
34°
Feels like 24°F
Clear
as of 7:55 AM CST
Rel. Humidity: 55%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
13 MPH
180° South
Cloud Level(s): Clear
Current Conditions at
MATTOON - (KMTO)
30°
Feels like 21°F
Mostly Cloudy
as of 7:53 AM CST
Rel. Humidity: 54%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.03 in.
Flight Rule: VFR
Wind Data
10 MPH
180° South
Cloud Level(s): Broken at 11000ft
Current Conditions at
OLNEY-NOBLE AIRPORT - (KOLY)
37°
Feels like 30°F
Clear
as of 7:55 AM CST
Rel. Humidity: 69%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 16 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
FLORA MUNICIPAL AIRPORT - (KFOA)
36°
Feels like 27°F
Clear
as of 7:55 AM CST
Rel. Humidity: 69%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
12 MPH
210° Southwest
Cloud Level(s): Clear
Mostly Cloudy on Today Today... Mostly cloudy, then gradually becoming sunny, with a high near 43. West southwest wind 10 to 17 mph, with gusts as high as 28 mph.

Mostly Clear on Tonight Tonight... Mostly clear, with a low around 21. West southwest wind 8 to 15 mph, with gusts as high as 26 mph.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 34. West wind 3 to 7 mph.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 7. Wind chill values between -5 and 5. Light and variable wind becoming north 11 to 16 mph in the evening. Winds could gust as high as 23 mph.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 12. North wind 13 to 17 mph, with gusts as high as 24 mph.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 1. North northeast wind around 11 mph, with gusts as high as 20 mph.

40% chance of snow Saturday Saturday... A 40 percent chance of snow after noon. Mostly cloudy, with a high near 13. Northeast wind 9 to 11 mph, with gusts as high as 18 mph.

50% chance of snow Saturday Night Saturday Night... A 50 percent chance of snow. Mostly cloudy, with a low around 8.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 18.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 4.

Sunny on Monday Monday... Sunny, with a high near 19.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 6.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 29.

Current Radar Image


Sun Almanac for Island Grove, Illinois
Sunrise: 07:08 AM
Sunset: 5:01 PM
Civil Sunrise:06:39 AM
Civil Sunset: 5:30 PM
Nautical Sunrise: 06:06 AM
Nautical Sunset: 6:03 PM
Astro Sunrise: 05:35 AM
Astro Sunset: 6:35 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.