Weather forecast for 10 daysChatham, IL

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 59°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphS 173°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:11 am CDT
  • Sunset: 6:16 pm CDT
  • ▼
On Saturday, in Chatham, the outlook remains bright and sunny.
The temperature variation is predicted to range from a maximum of a refreshing 59°F to a minimum of a wintry 37.4°F.
Anticipated temperatures are trending a couple of degrees lower than October's climate norm of 64.2°F.
Sunrise was at 7:11 am and sunset will be at 6:16 pm; the daylight will last for 11h and 5min.

Sunday Oct 18, 2026

  • 66°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 11mphS 177°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:12 am CDT
  • Sunset: 6:15 pm CDT
  • ▼
Tomorrow, in Chatham, conditions will remain bright with clear skies.
Temperatures are set to span a considerable range, with a high of a breezy 66.2°F and a low of an icy 37.4°F.
Tomorrow's maximum temperature is expected to reflect the standard October high of 64.2°F.
Sunrise will be at 7:12 am and sunset at 6:15 pm; tomorrow's daylight will last for 11h and 3min.

10-day overview

Daily temperatures

Warmest period: Thursday - Sunday 79°C.
Coldest day: today 59°C.

Chance of precipitation

Highest chance: Monday 26.10. 9%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 59°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphS 173°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:11 am CDT
  • Sunset: 6:16 pm CDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 66°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 11mphS 177°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:12 am CDT
  • Sunset: 6:15 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 72°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 4mphSSE 164°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:13 am CDT
  • Sunset: 6:14 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 73°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 5mphSE 132°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:14 am CDT
  • Sunset: 6:12 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 75°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphS 186°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:15 am CDT
  • Sunset: 6:11 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 79°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 5mphSSE 148°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:16 am CDT
  • Sunset: 6:09 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 79°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphSE 126°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:17 am CDT
  • Sunset: 6:08 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 79°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 7mphSSE 148°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:18 am CDT
  • Sunset: 6:07 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 79°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 7mphSSW 205°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:19 am CDT
  • Sunset: 6:05 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 77°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 6mphS 173°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:20 am CDT
  • Sunset: 6:04 pm CDT
  • ▼
Over the next ten days, conditions will reflect that a combination of dry and sunny and cloud-filled weather is forecasted.
Rainfall is not predicted in Chatham in the upcoming days.
Temperature differences will be noticeable throughout the forecast window. The maximum temperature will vary between 59°F and 78.8°F, while the nightly low temperatures will show also a considerable swing, as the minimum temperature is expected to range between 37.4°F and 51.8°F.
Thursday through next Sunday, with the highest temperature of 78.8°F, will be the warmest days in Chatham; today is the coldest day, with a maximum temperature of 59°F.
Updated: Oct 17, 2026 @ 16:05:51 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, sunshine and minimal clouds are in the outlook.

Today, the maximum temperature will be 59°F, while the minimum temperature will be 37.4°F.
The highest temperature today will be moderately lower than the average maximum temperature in October. Today, the lowest temperature will be significantly lower than the average low of 48.2°F.

On Saturday, in Chatham, sunrise was at 7:11 am and sunset will be at 6:16 pm (CDT).

In Chatham, the length of the day today will be 11h and 5min.

On Sunday, in Chatham, bright and sunny weather is expected.

Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 37.4°F.
The highest temperature will be in line with the average maximum of 64.2°F in October. The lowest temperature will be uncommonly lower than the average low of 48.2°F.

On Sunday, in Chatham, sunrise will be at 7:12 am and sunset at 6:15 pm (CDT).

In Chatham, Illinois, tomorrow, there will be 11h and 3min of daylight.