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La Grange, Illinois Weather Forecast
La Grange, Illinois Weather
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Weather Forecast for La Grange, Illinois : Brown County
Issued: 12:21 am CST Dec 18, 2025 Latitude: 39.9472702 Longitude: -90.5373487 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
40% chance of rain on Overnight 90% chance of rain on Thursday Sunny on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Partly Sunny on Monday Partly Sunny on Tuesday 20% chance of rain on Wednesday
Low: 50 °F High: 38 °F High: 34°F High: 49°F High: 37°F High: 42°F High: 54°F High: 54°F
Low: 19°F Low: 35 °F Low: 22°F Low: 26°F Low: 36°F Low: 37°F  
Rain Rain Sunny Partly Sunny Mostly Sunny Partly Sunny Partly Sunny Rain
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Current Conditions at
JACKSONVILLE MUNICIPAL - (KIJX)
46°
Feels like 39°F
Partly Cloudy
as of 12:15 AM CST
Rel. Humidity: 81%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.69 in.
Flight Rule: VFR
Wind Data
16 MPH
Gust: 26 MPH
160° South
Cloud Level(s): Scattered at 3600ft
Current Conditions at
QUINCY - (KUIN)
50°
Feels like 44°F
Cloudy
as of 11:54 PM CST
Rel. Humidity: 71%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.64 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 25 MPH
170° South
Cloud Level(s): Solid Overcast at 3400ft
Current Conditions at
MACOMB MUNICIPAL AIRPORT - (KMQB)
39°
Feels like 31°F
Partly Cloudy
as of 12:15 AM CST
Rel. Humidity: 86%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.65 in.
Flight Rule: VFR
Wind Data
14 MPH
160° South
Cloud Level(s): Scattered at 3500ft
40% chance of rain Overnight Overnight... Scattered showers after 5am. Cloudy, with a temperature rising to around 50 by 5am. South wind 14 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

90% chance of rain Thursday Thursday... Showers, mainly before 11am. Temperature falling to around 38 by 5pm. Breezy, with a south wind 16 to 21 mph becoming west in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 90%.

30% chance of rain & snow Thursday Night Thursday Night... Scattered rain showers before 7pm, then scattered snow showers between 7pm and midnight. Partly cloudy, with a low around 19. Breezy, with a west wind 15 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.

Sunny on Friday Friday... Sunny, with a high near 34. West wind 6 to 13 mph becoming south in the afternoon. Winds could gust as high as 20 mph.

Cloudy on Friday Night Friday Night... Partly cloudy, with a temperature rising to around 35 by 5am. South wind 13 to 16 mph, with gusts as high as 24 mph.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 49.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 22.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 37.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 26.

Partly Sunny on Monday Monday... Partly sunny, with a high near 42.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 36.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 54.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 37.

20% chance of rain Wednesday Wednesday... A 20 percent chance of rain. Mostly cloudy, with a high near 54.

Current Radar Image


Sun Almanac for La Grange, Illinois
Sunrise: 07:19 AM
Sunset: 4:39 PM
Civil Sunrise:06:48 AM
Civil Sunset: 5:10 PM
Nautical Sunrise: 06:14 AM
Nautical Sunset: 5:44 PM
Astro Sunrise: 05:41 AM
Astro Sunset: 6:17 PM
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