Promontory Point Park, IL Weather Forecast

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Promontory Point Park, IL Weather Forecast

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Promontory Point Park IL weather  - Clear - 87°F
Clear
87°F
Updated 9:50 pm
Feels Like 77°F
Humidity 63%
Wind SW 14 mph
Barometer  29.95 in
Dew Point 73°F
Promontory Point Park IL weather  - Clear - 31°C
Clear
31°C
Updated 9:50 pm
Feels Like 25°C
Humidity 63%
Wind SW 23 km/h
Barometer  101.4 kPa
Dew Point 23°C

Promontory Point Park Weather Forecast

REST OF TONIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT LABOR DAY
Promontory Point Park, IL Weather - Rest Of Tonight Mostly Clear Promontory Point Park, IL Weather - Wednesday Mostly Sunny Promontory Point Park, IL Weather - Wednesday Night Partly Cloudy Promontory Point Park, IL Weather - Thursday Chance Of T-Storm Promontory Point Park, IL Weather - Thursday Night Chance Of T-Storm Promontory Point Park, IL Weather - Friday Chance Of T-Storm Promontory Point Park, IL Weather - Friday Night Chance Of T-Storm Promontory Point Park, IL Weather - Saturday Chance Of T-Storm Promontory Point Park, IL Weather - Saturday Night Partly Cloudy Promontory Point Park, IL Weather - Sunday Chance Of Showers Promontory Point Park, IL Weather - Sunday Night Mostly Cloudy Promontory Point Park, IL Weather - Labor Day Mostly Cloudy
Mostly Clear Mostly Sunny Partly Cloudy Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Partly Cloudy Chance of Showers Mostly Cloudy Mostly Cloudy
Lo: 75°FLo: 24°C Hi: 95°FHi: 35°C
Lo: 75°FLo: 24°C Hi: 90°FHi: 32°C
Lo: 75°FLo: 24°C Hi: 89°FHi: 32°C
Lo: 71°FLo: 22°C Hi: 85°FHi: 29°C
Lo: 71°FLo: 22°C Hi: 81°FHi: 27°C
Lo: 69°FLo: 21°C Hi: 80°FHi: 27°C
POP: 20% POP: 50% POP: 50% POP: 50% POP: 40% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 906 PM CDT Tue Sep 01 2026 Promontory Point Park, IL Weather - WeatherWorld.com

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Issued: 607 PM CDT Tue Sep 1 2026

Key Messages

  • Hot and humid conditions will persist with peak afternoon heat indices around 100 to locally 110F today and again on Wednesday.
  • Chances for thunderstorms increase Thursday and Friday as the hot and humid conditions are pushed south of I-80.
  • A break in the humidity may materialize this weekend.

Discussion

... Issued at 202 PM CDT Tue Sep 1 2026

The broad ridge of high pressure over the Ohio and Tennessee River Valleys continues to build into the southern Great Lakes this afternoon. Benea...