Weather forecast for 10 daysWilliamson, IL

10-day overview

Daily temperatures

Warmest day: today 81°C.
Coldest day: Friday 06.11. 57°C.

Chance of precipitation

Highest chance: Wednesday 75%.

Long-term weather forecast

  • Thursday
  • Oct 29, 2026
  • 81°F
  • 57°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 9mphWSW 251°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:23 am CDT
  • Sunset: 6:02 pm CDT
  • ▼
  • Friday
  • Oct 30, 2026
  • 73°F
  • 55°F
Cloudy
Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 9mphE 100°
  • Humidity: 66%
  • UV index: 2
  • Sunrise: 7:24 am CDT
  • Sunset: 6:00 pm CDT
  • ▼
  • Saturday
  • Oct 31, 2026
  • 68°F
  • 55°F
Cloudy
Cloudy
  • Precip. probability: 8%
  • Precipitation: 0.04"
  • Wind: 9mphE 100°
  • Humidity: 60%
  • UV index: 2
  • Sunrise: 7:25 am CDT
  • Sunset: 5:59 pm CDT
  • ▼
  • Sunday
  • Nov 1, 2026
  • 70°F
  • 57°F
AM Showers
AM Showers
  • Precip. probability: 48%
  • Precipitation: 0.04"
  • Wind: 8mphSE 144°
  • Humidity: 80%
  • UV index: 2
  • Sunrise: 6:26 am CST
  • Sunset: 4:58 pm CST
  • ▼
  • Monday
  • Nov 2, 2026
  • 72°F
  • 61°F
Cloudy
Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.12"
  • Wind: 13mphSSE 162°
  • Humidity: 76%
  • UV index: 1
  • Sunrise: 6:27 am CST
  • Sunset: 4:57 pm CST
  • ▼
  • Tuesday
  • Nov 3, 2026
  • 75°F
  • 55°F
Showers
Showers
  • Precip. probability: 46%
  • Precipitation: 0.39"
  • Wind: 16mphS 171°
  • Humidity: 66%
  • UV index: 2
  • Sunrise: 6:28 am CST
  • Sunset: 4:56 pm CST
  • ▼
  • Wednesday
  • Nov 4, 2026
  • 68°F
  • 48°F
Rain
Rain
  • Precip. probability: 75%
  • Precipitation: 0.28"
  • Wind: 10mphSSW 209°
  • Humidity: 73%
  • UV index: 2
  • Sunrise: 6:29 am CST
  • Sunset: 4:55 pm CST
  • ▼
  • Thursday
  • Nov 5, 2026
  • 61°F
  • 43°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 11mphW 279°
  • Humidity: 69%
  • UV index: 2
  • Sunrise: 6:31 am CST
  • Sunset: 4:54 pm CST
  • ▼
  • Friday
  • Nov 6, 2026
  • 57°F
  • 37°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 10mphNW 305°
  • Humidity: 65%
  • UV index: 2
  • Sunrise: 6:32 am CST
  • Sunset: 4:53 pm CST
  • ▼
  • Saturday
  • Nov 7, 2026
  • 59°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphNW 304°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 6:33 am CST
  • Sunset: 4:52 pm CST
  • ▼
Looking ahead, conditions suggest a period of gloomy, rainy and sun-filled weather is anticipated.
Rainfall is expected on Sunday through Wednesday.
The temperature will vary considerably in the upcoming days. Forecast highs will fluctuate between 57.2°F and 80.6°F, while the difference in minimum temperatures will be also substantial, as nighttime lows are forecast to fall between 37.4°F and 60.8°F.
With a high of 80.6°F, today is the warmest day; the coldest day will be next Friday, with a maximum of 57.2°F.
Updated: Oct 29, 2026 @ 14:22:00 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

In Williamson, a combination of overcast, damp and sun-filled weather is predicted for the next ten days.

Rainfall is predicted for Sunday through Wednesday in Williamson. With light precipitation of 0.39", Tuesday will be the day with the most rainfall.

The maximum temperature will vary between 57.2°F and 80.6°F, as the minimum temperature will vary between 37.4°F and 60.8°F.

Today is the warmest day, with a maximum temperature of 80.6°F. The coldest day will be next Friday, with a maximum of 57.2°F.

On Saturday, in Williamson, a mostly cloudy day is ahead.

On Saturday, there is a low chance of minimal precipitation in Williamson.

On Saturday, the highest temperature will be 68°F, while the lowest temperature will be 55.4°F.

On Sunday, in Williamson, rain showers will likely move through during the early hours.

On Sunday, there is a low probability of minimal rainfall in Williamson.

On Sunday, the maximum temperature will be 69.8°F, while the minimum temperature will be 57.2°F.