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Oak Grove, Illinois Weather Forecast
Oak Grove, Illinois Weather
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Weather Forecast for Oak Grove, Illinois : Cass County
Issued: 5:51 am CST Jan 24, 2026 Latitude: 40.0194927 Longitude: -90.4145691 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Sunday Monday Tuesday Wednesday Thursday Friday
60% chance of snow on Today 70% chance of snow on Tonight 60% chance of snow on Sunday Sunny on Monday Sunny on Tuesday Partly Sunny on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday
High: 9 °F Low: 7 °F High: 15°F High: 14°F High: 29°F High: 21°F High: 19°F High: 21°F
Low: -1°F Low: 6 °F Low: 4°F Low: 4°F Low: 3°F  
Snow Snow Snow Sunny Sunny Partly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
JACKSONVILLE MUNICIPAL - (KIJX)
-2°
Feels like -19°F
Cloudy
as of 5:35 AM CST
Rel. Humidity: 49%
Dew Point: -17°F
Visibility: 10 Miles
Pressure: 30.69 in.
Flight Rule: VFR
Wind Data
12 MPH
Gust: 16 MPH
030° Northeast
Cloud Level(s): Solid Overcast at 9000ft
Current Conditions at
MACOMB MUNICIPAL AIRPORT - (KMQB)
-4°
Cloudy
as of 5:35 AM CST
Rel. Humidity: 48%
Dew Point: -18°F
Visibility: 10 Miles
Pressure: 30.74 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 9000ft
Current Conditions at
SPRINGFIELD - (KSPI)
-4°
Partly Cloudy
as of 4:52 AM CST
Rel. Humidity: 53%
Dew Point: -17°F
Visibility: 10 Miles
Pressure: 30.71 in.
Flight Rule: VFR
Wind Data
8 MPH
020° North
Cloud Level(s): Scattered at 9500ft
60% chance of snow Today Today... Snow likely, mainly after 3pm. Cloudy and cold, with a high near 9. Wind chill values between -5 and -15. Northeast wind around 7 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than one inch possible.

70% chance of snow Tonight Tonight... Snow likely. Cloudy, with a low around 7. Wind chill values between -5 and zero. North northeast wind 6 to 8 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

60% chance of snow Sunday Sunday... Snow likely, mainly before 9am. Cloudy, with a high near 15. Wind chill values between -8 and 2. North wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around -1. Wind chill values between -3 and -13. North northwest wind 7 to 9 mph, with gusts as high as 20 mph.

Sunny on Monday Monday... Sunny, with a high near 14. Northwest wind 7 to 9 mph becoming west southwest in the afternoon. Winds could gust as high as 17 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 6. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.

Sunny on Tuesday Tuesday... Sunny, with a high near 29. West southwest wind 7 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 4.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 21.

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

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 19.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 3.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 21.

Current Radar Image


Sun Almanac for Oak Grove, Illinois
Sunrise: 07:16 AM
Sunset: 5:11 PM
Civil Sunrise:06:47 AM
Civil Sunset: 5:40 PM
Nautical Sunrise: 06:14 AM
Nautical Sunset: 6:13 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 6:45 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.