Weather forecast for 10 daysChicago Heights, IL

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 64°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 13mphSSW 201°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:06 am CDT
  • Sunset: 6:05 pm CDT
  • ▼
Today, in Chicago Heights, bright and sunny weather is expected.
A wide temperature range is forecasted, from a high of a comfortable 64.4°F to a low of a cold 37.4°F.
The temperature for today is predicted to correspond with the average October peak of 61.2°F.
Sunrise will be at 7:06 am and sunset at 6:05 pm; the daylight will last for 10h and 59min.

10-day overview

Daily temperatures

Warmest day: Sunday 25.10. 73°C.
Coldest day: today 64°C.

Chance of precipitation

Highest chance: Tuesday 27.10. 16%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 64°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 13mphSSW 201°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:06 am CDT
  • Sunset: 6:05 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphS 185°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:07 am CDT
  • Sunset: 6:03 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 70°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphE 88°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:08 am CDT
  • Sunset: 6:02 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 72°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 4mphS 174°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:09 am CDT
  • Sunset: 6:00 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 72°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphNE 44°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:10 am CDT
  • Sunset: 5:59 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 72°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphESE 123°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:11 am CDT
  • Sunset: 5:57 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 72°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphSSE 150°
  • Humidity: 55%
  • UV index: 3
  • Sunrise: 7:13 am CDT
  • Sunset: 5:56 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 73°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 7mphS 189°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:14 am CDT
  • Sunset: 5:54 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 70°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 7mphSSE 165°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:15 am CDT
  • Sunset: 5:53 pm CDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 66°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 7mphE 98°
  • Humidity: 65%
  • UV index: 3
  • Sunrise: 7:16 am CDT
  • Sunset: 5:52 pm CDT
  • ▼
Over the next ten days, conditions will reflect that a combination of dry and sunny and overcast weather is predicted.
Rainfall is not forecasted in Chicago Heights in the upcoming days.
In the upcoming days, the highest temperature will vary between 64.4°F and 73.4°F, while the lowest nightly temperature differences will be quite pronounced, as temperatures overnight will fluctuate from 37.4°F up to 50°F.
Next Sunday is expected to be the warmest, reaching up to 73.4°F; today is the coldest day, with a maximum temperature of 64.4°F.
Updated: Oct 18, 2026 @ 08:06:56 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, expect bright skies and plenty of sunshine.

Today, the maximum temperature will be 64.4°F, while the minimum temperature will be 37.4°F.
The highest temperature will be in line with the average maximum of 61.2°F in October. The lowest temperature today will be noticeably lower than the average low of 46.9°F.

On Sunday, in Chicago Heights, sunrise will be at 7:06 am and sunset at 6:05 pm (CDT).

In Chicago Heights, today, there will be 10h and 59min of daylight.