Williamson County (Energy)
October
Weather in Williamson County, Illinois for October 2027
Your guide to Williamson County weather in October - trends and predictions
In general, the average temperature in Williamson County at the beginning of October is 26.2 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.2 °C by the end of October.
With an average of 5 rainy days, Williamson County experiences minimal rainfall in October.
Is October a good time to visit Williamson County? check out the best time to travel to Williamson County page.
✨ Is October a good time to visit Williamson County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
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26
Dry days
5
Rainy days
0
Snow days
22°/11°
Temperatures
18 km/h
Avg max wind
63 %
Avg humidity
Williamson County Weather October
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Temperatures trend during October in Williamson County
See the weather trend as well as the moving average line
October weather in Williamson County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 |  Overcast | 28° /16° | 0 mm | 4 | |
| Oct. 2 |  Light rain | 25° /14° | 5.2 mm | 4 | |
| Oct. 3 |  Sunny | 26° /13° | 0 mm | 5 | |
| Oct. 4 |  Fog | 27° /15° | 0 mm | 5 | |
| Oct. 5 | Sunny | 28° /15° | 0 mm | 5.7 | |
| Oct. 6 | Sunny | 25° /15° | 0 mm | 5.6 | |
| Oct. 7 | Sunny | 25° /12° | 0.5 mm | 5.6 | |
| Oct. 8 | Sunny | 24° /11° | 0 mm | 5 | |
| Oct. 9 | Sunny | 25° /10° | 0 mm | 5 | |
| Oct. 10 | Sunny | 24° /10° | 0.2 mm | 4 | |
| Oct. 11 | Sunny | 26° /14° | 0 mm | 5 | |
| Oct. 12 | Overcast | 28° /14° | 0 mm | 5 | |
| Oct. 13 |  Thundery outbreaks possible | 27° /16° | 0 mm | 5 | |
| Oct. 14 | Light rain | 22° /13° | 5.7 mm | 4 | |
| Oct. 15 | Light rain | 24° /13° | 8.2 mm | 4 | |
| Oct. 16 | Sunny | 21° /9° | 0.9 mm | 4 | |
| Oct. 17 | Sunny | 18° /8° | 0 mm | 4 | |
| Oct. 18 | Sunny | 22° /9° | 0 mm | 4.6 | |
| Oct. 19 |  Heavy rain | 21° /8° | 48 mm | 4 | |
| Oct. 20 | Sunny | 22° /9° | 0 mm | 4.5 | |
| Oct. 21 | Sunny | 23° /10° | 0 mm | 4.4 | |
| Oct. 22 | Sunny | 23° /8° | 0 mm | 4.3 | |
| Oct. 23 | Sunny | 22° /11° | 0 mm | 4 | |
| Oct. 24 |  Partly cloudy | 21° /8° | 0 mm | 4.2 | |
| Oct. 25 | Overcast | 22° /11° | 0 mm | 3 | |
| Oct. 26 | Light rain | 19° /11° | 9.8 mm | 3 | |
| Oct. 27 | Light rain | 17° /10° | 3.8 mm | 3 | |
| Oct. 28 | Light rain | 20° /10° | 3.4 mm | 3.9 | |
| Oct. 29 |  Moderate rain | 21° /13° | 24.3 mm | 3.8 | |
| Oct. 30 | Overcast | 21° /11° | 0.3 mm | 3 | |
| Oct. 31 | Heavy rain | 20° /11° | 13.5 mm | 2 | |
| Next | |||||
Important Notice
Our weather forecast for Williamson County in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Williamson County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Williamson County in October - FAQ
What are the expected maximum and minimum temperatures in Williamson County during October?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Williamson County during October?
Significant rainfall exceeding 150.8 mm is expected in Williamson County during October, occurring over more than 5 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Williamson County during October?
The average wind speed in Williamson County during October is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Williamson County
Explore the daily rainfall trends and prepare for Williamson Countys October weather 💧
Typically, Williamson County has 5 rainy days in October with a total of 150.8 mm of rainfall.
UV exposure in Williamson County during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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