Weather forecast for todayWilliamson, IL

Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND

Weather forecast for today

Current condition 9:56 pm CDT

  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 1mphNNE 30°
  • Humidity: 86%
  • Dewpoint: 37°F
  • Pressure: 30.48"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In Williamson, currently, the sky is a wide-open expanse of clear blue.
The temperature is a brisk 42.8°F. The current temperature is a few degrees off the minimum of 35.6°F.

Saturday Oct 17, 2026

  • min.
  • 36°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 3mphSE 138°
  • Humidity: 81%
  • UV index: 0
  • Sunrise: 7:10 am CDT
  • Sunset: 6:17 pm CDT
  • ▼
In Williamson, for the rest of Saturday, cloudless and clear weather is anticipated.
The lowest temperature will be a cold 35.6°F.
Sunrise was at 7:10 am and sunset at 6:17 pm; the daylight lasted for 11h and 7min.

Hourly overview

Hourly temperatures

Warmest hour: 10 pm 43°C.
Coldest hour: 6 am 37°C.

Chance of precipitation

Highest chance: 5 am - 6 am 3%.

Hourly weather forecast

  • 10 pm
  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphESE 113°
  • Humidity: 85%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 41°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphSE 127°
  • Humidity: 83%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 12 am
  • 41°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphSE 135°
  • Humidity: 84%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 1 am
  • 41°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphSSE 146°
  • Humidity: 78%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 41°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphSE 140°
  • Humidity: 79%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 3 am
  • 39°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphSE 142°
  • Humidity: 79%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 39°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphSSE 147°
  • Humidity: 79%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 5 am
  • 39°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 3mphSE 145°
  • Humidity: 80%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 2mphSE 146°
  • Humidity: 82%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 7 am
  • 37°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 3mphSSE 150°
  • Humidity: 84%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Updated: Oct 18, 2026 @ 02:56:55 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The temperature at 9:56 pm CDT is 42.8°F.

Today, in Williamson, cloudless and clear weather is anticipated.

On Saturday, in Williamson, sunrise was at 7:10 am and sunset at 6:17 pm (CDT).

Today, the daylight lasted for 11h and 7min.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND

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Williamson, Illinois, USA

  • en: Williamson, Illinois, USA
  • es: Williamson, Illinois, EE.UU.
  • hr: Vilijamson, Ilinois, SAD
  • mk: Vilijamson, Ilinois, SAD
  • sr: Vilijamson, Ilinois, SAD
  • zh: 威廉森, 伊利诺伊, 美国
  • Latitude: 38.985602°
  • Longitude: -89.763983°
  • Elevation: 607 ft
  • Current time: 9:56pm CDT
  • Sunrise: 7:10 am CDT
  • Sunset: 6:17 pm CDT
  • Timezone: America/Chicago

Nearby Williamson, Illinois, USA

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