Weather forecast for 10 daysForest Park, IL

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 57°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphSW 226°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:06 am CDT
  • Sunset: 6:06 pm CDT
  • ▼
Today, on Saturday, October 17, sunshine is expected with little to no cloud cover.
Temperatures are anticipated to peak at a refreshing 57.2°F and drop to a minimum of a brisk 42.8°F.
Today's peak is forecasted to reflect the usual October high temperature of 59.9°F.
Sunrise was at 7:06 am and sunset will be at 6:06 pm; the daylight will last for 11h and 1min.

Sunday Oct 18, 2026

  • 64°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 14mphSSW 206°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:07 am CDT
  • Sunset: 6:05 pm CDT
  • ▼
Tomorrow, on Sunday, October 18, expect bright skies and plenty of sunshine.
The maximum temperature will be a breezy 64.4°F, while the minimum predicted temperature is a frosty 42.8°F.
Tomorrow's top temperature will be relatively higher than October's standard maximum of 59.9°F.
Sunrise will be at 7:07 am and sunset at 6:05 pm; tomorrow's daylight will last for 10h and 58min.

10-day overview

Daily temperatures

Maximum temperature: 72°C.
Coldest day: today 57°C.

Chance of precipitation

Highest chance: Monday 26.10. 8%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 57°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphSW 226°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:06 am CDT
  • Sunset: 6:06 pm CDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 64°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 14mphSSW 206°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:07 am CDT
  • Sunset: 6:05 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphSSW 194°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:08 am CDT
  • Sunset: 6:03 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 68°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 6mphESE 122°
  • Humidity: 58%
  • UV index: 4
  • Sunrise: 7:09 am CDT
  • Sunset: 6:02 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 72°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphS 186°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 7:10 am CDT
  • Sunset: 6:00 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 72°F
  • 50°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphSE 144°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:12 am CDT
  • Sunset: 5:59 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 70°F
  • 50°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 7mphESE 113°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:13 am CDT
  • Sunset: 5:57 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 70°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 9mphSE 138°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:14 am CDT
  • Sunset: 5:56 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 72°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 9mphSSW 198°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:15 am CDT
  • Sunset: 5:55 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 68°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 8mphNNE 32°
  • Humidity: 61%
  • UV index: 3
  • Sunrise: 7:16 am CDT
  • Sunset: 5:53 pm CDT
  • ▼
Ten-day trends indicate that a combination of dry and sunny and cloudy weather is forecasted.
Rainfall is not anticipated in Forest Park in the upcoming period.
Expect a substantial fluctuation in daytime highs across the forecast period. Maximum temperatures are forecasted between 57.2°F and 71.6°F, while the forecast minimum temperature falls between 42.8°F and 51.8°F.
Wednesday, Thursday and next Sunday, with the highest temperature of 71.6°F, will be the warmest days in Forest Park; today is the coldest day, with a maximum temperature of 57.2°F.
Updated: Oct 17, 2026 @ 16:02:54 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, in Forest Park, sunny conditions are expected to continue.

Today, the highest temperature in Forest Park, Illinois, will be 57.2°F, while the lowest temperature will be 42.8°F.
Today, the highest temperature will be in line with the average maximum temperature in October. The lowest temperature will be relatively lower than the average low of 47.8°F.

On Saturday, in Forest Park, sunrise was at 7:06 am and sunset will be at 6:06 pm (CDT).

In Forest Park, today, there will be 11h and 1min of daylight.

Tomorrow, expect sunny weather with a crisp, clear sky.

Tomorrow, the highest temperature will be 64.4°F, while the lowest temperature will be 42.8°F.
The maximum temperature tomorrow will be a couple of degrees higher than the average highest temperature in October. The lowest temperature will be also relatively lower than the average low of 47.8°F.

On Sunday, in Forest Park, sunrise will be at 7:07 am and sunset at 6:05 pm (CDT).

Tomorrow, the daylight will last for 10h and 58min.