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Harper Park, IL Weather Forecast

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Harper Park, IL Weather Forecast

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Harper Park IL weather - Mostly Cloudy - 56°F
Mostly Cloudy
56°F
Updated 9:15 am
Feels Like 51°F
Humidity 71%
Wind N 13 mph
Barometer  30.19 in
Dew Point 47°F
Harper Park IL weather - Mostly Cloudy - 13°C
Mostly Cloudy
13°C
Updated 9:15 am
Feels Like 10°C
Humidity 71%
Wind N 21 km/h
Barometer  102.2 kPa
Dew Point 8°C
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Harper Park Weather Forecast

TODAY TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT
Harper Park, IL Weather - Today Clearing Harper Park, IL Weather - Tonight Mostly Clear Harper Park, IL Weather - Saturday Sunny Harper Park, IL Weather - Saturday Night Mostly Clear Harper Park, IL Weather - Sunday Sunny Harper Park, IL Weather - Sunday Night Clear Harper Park, IL Weather - Monday Sunny Harper Park, IL Weather - Monday Night Clear Harper Park, IL Weather - Tuesday Sunny Harper Park, IL Weather - Tuesday Night Mostly Clear Harper Park, IL Weather - Wednesday Partly Cloudy Harper Park, IL Weather - Wednesday Night Partly Cloudy
Clearing Mostly Clear Sunny Mostly Clear Sunny Clear Sunny Clear Sunny Mostly Clear Partly Cloudy Partly Cloudy
Hi: 61°FHi: 16°C
 Lo: 45°FLo: 7°C Hi: 69°FHi: 21°C
 Lo: 49°FLo: 9°C Hi: 71°FHi: 22°C
 Lo: 45°FLo: 7°C Hi: 61°FHi: 16°C
 Lo: 45°FLo: 7°C Hi: 65°FHi: 18°C
 Lo: 49°FLo: 9°C Hi: 71°FHi: 22°C
 Lo: 51°FLo: 11°C
POP = Probability of Precipitation.
Weather Outlook Updated: 521 AM CDT Fri Oct 02 2026 Harper Park, IL Weather - WeatherWorld.com

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Harper Park Forecast Discussion

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Issued: 611 AM CDT Fri Oct 2 2026

Key Messages

  • Tonight will be the coldest night of the season so far with lows in low to mid 40s (perhaps a few spots in the upper 30s) away from the Chicago urban heat island.
  • Extended period of dry weather with seasonable temperatures though much of next week.

Discussion

... Issued at 214 AM CDT Fri Oct 2 2026

Rain is gradually ending from northwest to southeast early this morning as the main trough responsible for our extended period of rain exits eastward. Precip is now confined to primarily east...