Weather forecast for 10 daysGrayslake, IL

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 57°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphSW 227°
  • Humidity: 43%
  • UV index: 4
  • Sunrise: 7:07 am CDT
  • Sunset: 6:07 pm CDT
  • ▼
Today, in Grayslake, skies are expected to be clear and full of sunshine.
Temperature is predicted to swing from a high of a refreshing 57.2°F to a low of a wintry 39.2°F.
Today, expect the temperature to remain near October's average maximum of 59°F.
Sunrise was at 7:07 am and sunset will be at 6:07 pm; the daylight will last for 10h and 59min.

Sunday Oct 18, 2026

  • 63°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 16mphSSW 210°
  • Humidity: 52%
  • UV index: 4
  • Sunrise: 7:08 am CDT
  • Sunset: 6:05 pm CDT
  • ▼
On Sunday, in Grayslake, sunny skies are in store, with excellent visibility.
Temperature span will be from a high of an enjoyable 62.6°F to a low of a cold 39.2°F.
The anticipated maximum temperature will closely reflect October's average high of 59°F.
Sunrise will be at 7:08 am and sunset at 6:05 pm; tomorrow's daylight will last for 10h and 57min.

10-day overview

Daily temperatures

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

Chance of precipitation

Highest chance: Tuesday 7%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 57°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphSW 227°
  • Humidity: 43%
  • UV index: 4
  • Sunrise: 7:07 am CDT
  • Sunset: 6:07 pm CDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 63°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 16mphSSW 210°
  • Humidity: 52%
  • UV index: 4
  • Sunrise: 7:08 am CDT
  • Sunset: 6:05 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 4mphSSW 204°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 7:09 am CDT
  • Sunset: 6:04 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 68°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 6mphESE 107°
  • Humidity: 63%
  • UV index: 4
  • Sunrise: 7:11 am CDT
  • Sunset: 6:02 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 70°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 5mphSSW 195°
  • Humidity: 60%
  • UV index: 4
  • Sunrise: 7:12 am CDT
  • Sunset: 6:01 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 72°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphSE 139°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 7:13 am CDT
  • Sunset: 5:59 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 70°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphESE 120°
  • Humidity: 65%
  • UV index: 3
  • Sunrise: 7:14 am CDT
  • Sunset: 5:58 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 70°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 8mphSSE 148°
  • Humidity: 64%
  • UV index: 3
  • Sunrise: 7:15 am CDT
  • Sunset: 5:56 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 72°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 8mphSSW 207°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 7:17 am CDT
  • Sunset: 5:55 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 68°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphNE 40°
  • Humidity: 66%
  • UV index: 3
  • Sunrise: 7:18 am CDT
  • Sunset: 5:53 pm CDT
  • ▼
Over the next ten days, a combination of mostly clear and cloudy weather is predicted.
Rain is not forecasted in Grayslake in the upcoming period.
Significant changes in temperature are expected in the upcoming period. The maximum temperature will vary between 57.2°F and 71.6°F, while the low temperature range extends from 39.2°F to 50°F.
The warmest days in Grayslake will be Thursday and next Sunday, with a maximum of 71.6°F; today is the coldest day, with a maximum temperature of 57.2°F.
Updated: Oct 17, 2026 @ 16:53:27 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, conditions will remain bright with clear skies.

Today, the maximum temperature will be 57.2°F, while the minimum temperature will be 39.2°F.
The highest temperature today will be in line with the average maximum temperature in October. The lowest temperature will be a few degrees lower than the average low of 45.1°F.

On Saturday, in Grayslake, sunrise was at 7:07 am and sunset will be at 6:07 pm (CDT).

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

Tomorrow, in Grayslake, conditions will remain bright with clear skies.

Tomorrow, the maximum temperature will be 62.6°F, while the minimum temperature will be 39.2°F.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. The lowest temperature tomorrow will be slightly cooler than the average low temperature.

On Sunday, in Grayslake, sunrise will be at 7:08 am and sunset at 6:05 pm (CDT).

In Grayslake, the length of the day tomorrow will be 10h and 57min.