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Algonquin, Illinois Weather Forecast
Algonquin, Illinois Weather
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Weather Forecast for Algonquin, Illinois : McHenry County
Issued: 3:11 pm CST Dec 21, 2025 Latitude: 42.1655801 Longitude: -88.2942493 View on Google Maps

MouseOver for Detail Forecast
Tonight Monday Tuesday Wednesday Christmas Day Friday Saturday Sunday
Increasing Clouds on Tonight 20% chance of rain on Monday Mostly Cloudy on Tuesday 30% chance of rain on Wednesday Patchy Fog on Christmas Day Mostly Cloudy on Friday Mostly Cloudy on Saturday Sunny on Sunday
Low: 28 °F High: 40°F High: 45°F High: 42°F High: 48°F High: 47°F High: 42°F High: 32°F
Low: 37°F Low: 29°F Low: 39°F Low: 39°F Low: 33°F Low: 22°F  
Increasing Clouds Rain Mostly Cloudy Rain Patchy Fog Mostly Cloudy Mostly Cloudy Sunny
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Current Conditions at
WEST CHICAGO - (KDPA)
25°
Partly Cloudy
as of 6:52 PM CST
Rel. Humidity: 68%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.42 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 10000ft
Current Conditions at
CHICAGO/WHEELING - (KPWK)
28°
Clear
as of 6:52 PM CST
Rel. Humidity: 50%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.43 in.
Flight Rule: VFR
Wind Data
5 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
CHICAGO-OHARE - (KORD)
28°
Partly Cloudy
as of 6:51 PM CST
Rel. Humidity: 50%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.42 in.
Flight Rule: VFR
Wind Data
3 MPH
220° Southwest
Cloud Level(s): Few at 10000ft, Scattered at 25000ft
Current Conditions at
DE KALB TAYLOR MUNICIPAL - (KDKB)
23°
Cloudy
as of 6:55 PM CST
Rel. Humidity: 79%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.42 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 10000ft
Increasing Clouds on Tonight Tonight... Increasing clouds, with a temperature rising to around 28 by 5am. South wind 5 to 10 mph, with gusts as high as 15 mph.

20% chance of rain Monday Monday... A 20 percent chance of rain after 3pm. Cloudy, with a high near 40. South wind 10 to 15 mph, with gusts as high as 25 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a steady temperature around 37. South southwest wind 5 to 10 mph.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 45. West wind 5 to 10 mph.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 29. Calm wind becoming east southeast around 5 mph after midnight. Winds could gust as high as 10 mph.

30% chance of rain Wednesday Wednesday... A 30 percent chance of rain or drizzle after noon. Cloudy, with a high near 42.

60% chance of rain Wednesday Night Wednesday Night... Rain or drizzle likely before midnight, then a slight chance of drizzle after midnight. Patchy fog. Otherwise, cloudy, with a low around 39. Chance of precipitation is 60%.

Patchy Fog on Christmas Day Christmas Day... Patchy fog before noon. Otherwise, mostly cloudy, with a high near 48.

20% chance of rain Thursday Night Thursday Night... A chance of rain before midnight. Mostly cloudy, with a low around 39.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 47.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 33.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 42.

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

Sunny on Sunday Sunday... Sunny, with a high near 32.

Current Radar Image


Sun Almanac for Algonquin, Illinois
Sunrise: 07:19 AM
Sunset: 4:24 PM
Civil Sunrise:06:47 AM
Civil Sunset: 4:56 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 5:32 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:06 PM
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