Weather forecast for todayWilliamson, IL
Weather forecast for today
Current condition 9:27 am CDT
- 48°F
- Feels like:45°F
Sunny
- Precipitation: 0"
- Wind: 7mphSSE 160°
- Humidity: 68%
- Dewpoint: 37°F
- Pressure: 30.51"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
At the moment, a cloudless sky and warm sun dominate the day.
The temperature is a frosty 48.2°F, with the felt air temperature being evaluated at a brisk 44.6°F. The current temperature is relatively far from the maximum of 66.2°F forecasted for today.
The temperature is a frosty 48.2°F, with the felt air temperature being evaluated at a brisk 44.6°F. The current temperature is relatively far from the maximum of 66.2°F forecasted for today.
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 9mphS 171°
- Humidity: 44%
- UV index: 5
- Sunrise: 7:11 am CDT
- Sunset: 6:16 pm CDT
- details ▼
Today, in Williamson, sunshine will likely continue with scattered clouds at most.
The day's temperature range will span from a high of an enjoyable 66.2°F to a minimum of a cold 37.4°F.
Expect the maximum temperature to remain consistent with the typical October high of 65.3°F.
Sunrise was at 7:11 am and sunset will be at 6:16 pm; the daylight will last for 11h and 5min.
The day's temperature range will span from a high of an enjoyable 66.2°F to a minimum of a cold 37.4°F.
Expect the maximum temperature to remain consistent with the typical October high of 65.3°F.
Sunrise was at 7:11 am and sunset will be at 6:16 pm; the daylight will last for 11h and 5min.
Hourly overview
Hourly temperatures
Warmest hour: 4 pm 64°C.
Coldest hour: 12 am 45°C.
Coldest hour: 12 am 45°C.
Chance of precipitation
Highest chance: 12 am 3%.
Hourly weather forecast
- 10 am
- 50°F
- Feels like:48°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 8mphSSE 168°
- Humidity: 60%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 11 am
- 55°F
- Feels like:52°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 175°
- Humidity: 51%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 12 pm
- 59°F
- Feels like:55°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 177°
- Humidity: 45%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 1 pm
- 61°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphS 180°
- Humidity: 39%
- Pressure: 30.42"Hg
- Visibility: 10mi
- UV index: 5
- details ▼
- 2 pm
- 63°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 175°
- Humidity: 36%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 3 pm
- 64°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphS 174°
- Humidity: 33%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphSSE 168°
- Humidity: 33%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 5 pm
- 63°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphS 169°
- Humidity: 34%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSSE 154°
- Humidity: 41%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:16 pm
- 7 pm
- 54°F
- Feels like:54°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSE 140°
- Humidity: 56%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 8 pm
- 52°F
- Feels like:50°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSE 136°
- Humidity: 64%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 9 pm
- 48°F
- Feels like:48°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphSE 140°
- Humidity: 70%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 46°F
- Feels like:45°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphSE 142°
- Humidity: 75%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 11 pm
- 46°F
- Feels like:45°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 3mphSE 146°
- Humidity: 77%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Today, clear skies and sunny weather are expected.
The temperature will vary between a minimum of 46.4°F and a maximum of 64.4°F. The warmest part of the day will be at 3 pm and 4 pm.
Today, the high temperature will be in line with October's average. The minimum temperature will be more comparable to November's average low of 36.9°F than October's typical 48.4°F.
The temperature will vary between a minimum of 46.4°F and a maximum of 64.4°F. The warmest part of the day will be at 3 pm and 4 pm.
Today, the high temperature will be in line with October's average. The minimum temperature will be more comparable to November's average low of 36.9°F than October's typical 48.4°F.
Updated: Oct 18, 2026 @ 14:27:13 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Currently (9:27 am CDT) it is 48.2°F in Williamson.
On Sunday, skies are expected to be clear and full of sunshine.
Today, the highest temperature in Williamson, Illinois, will be 66.2°F, while the lowest temperature will be 37.4°F.
Today, the maximum temperature will be in line with the average highest temperature in October. Today, the lowest temperature will be significantly lower than the average low of 48.4°F.
Today, the maximum temperature will be in line with the average highest temperature in October. Today, the lowest temperature will be significantly lower than the average low of 48.4°F.
On Sunday, in Williamson, sunrise was at 7:11 am and sunset will be at 6:16 pm (CDT).
In Williamson, today, there will be 11h and 5min of daylight.
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: 9:27am CDT
- Sunrise: 7:11 am CDT
- Sunset: 6:16 pm CDT
- Timezone: America/Chicago
Nearby Williamson, Illinois, USA
- Livingston (1 mi)
- Staunton (2 mi)
- New Douglas (6 mi)
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- Worden (6 mi)
- Mount Olive (6 mi)
- Sawyerville (7 mi)
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- Benld (7 mi)
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- Mount Clare (9 mi)
- Eagarville (9 mi)
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- Sorento (11 mi)
- Gillespie (11 mi)
- Bunker Hill (11 mi)
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- Panama (13 mi)
- Royal Lakes (14 mi)
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