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Algonquin Park, IL Weather Forecast

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Algonquin Park, IL Weather Forecast

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Algonquin Park IL weather - Clear - 46°F
Clear
46°F
Updated 1:05 am
Feels Like 52°F
Humidity 95%
Wind N 0 mph
Barometer  30.23 in
Dew Point 45°F
Algonquin Park IL weather - Clear - 8°C
Clear
8°C
Updated 1:05 am
Feels Like 11°C
Humidity 95%
Wind N 0 km/h
Barometer  102.3 kPa
Dew Point 7°C
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Algonquin Park Weather Forecast

REST OF TONIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY
Algonquin Park, IL Weather - Rest Of Tonight Patchy Fog Algonquin Park, IL Weather - Thursday Patchy Fog Algonquin Park, IL Weather - Thursday Night Partly Cloudy Algonquin Park, IL Weather - Friday Partly Cloudy Algonquin Park, IL Weather - Friday Night Partly Cloudy Algonquin Park, IL Weather - Saturday Partly Cloudy Algonquin Park, IL Weather - Saturday Night Mostly Cloudy Algonquin Park, IL Weather - Sunday Mostly Cloudy Algonquin Park, IL Weather - Sunday Night Mostly Cloudy Algonquin Park, IL Weather - Monday Mostly Cloudy Algonquin Park, IL Weather - Monday Night Mostly Cloudy Algonquin Park, IL Weather - Tuesday Mostly Cloudy
Patchy Fog Patchy Fog Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy
Lo: 49°FLo: 9°C Hi: 71°FHi: 22°C
 Lo: 49°FLo: 9°C Hi: 71°FHi: 22°C
 Lo: 49°FLo: 9°C Hi: 71°FHi: 22°C
 Lo: 51°FLo: 11°C Hi: 75°FHi: 24°C
 Lo: 51°FLo: 11°C Hi: 69°FHi: 21°C
 Lo: 50°FLo: 10°C Hi: 65°FHi: 18°C
POP = Probability of Precipitation.
Weather Outlook Updated: 1226 AM CDT Thu Oct 22 2026 Algonquin Park, IL Weather - WeatherWorld.com

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Algonquin Park Forecast Discussion

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Issued: 1200 AM CDT Thu Oct 22 2026

Key Messages

  • The dry and unseasonably mild weather will continue through the upcoming weekend.

Discussion

... Issued at 136 PM CDT Wed Oct 21 2026

An anomalously strong mid-level ridge over the central CONUS will anchor omega blocking across much of North America over the next several days. Meanwhile, an elongated surface ridge extending from the Lower Mississippi River Valley to the Canadian Maritimes is in the processes of congealing with another expansive high pressure shifting toward the Upper G...