Williamson County (Energy)
July
Weather in Williamson County, Illinois for July 2026
Your guide to Williamson County weather in July - trends and predictions
In general, the average temperature in Williamson County at the beginning of July is 30.4 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 32 °F by the end of July.
Williamson County experiences heavy rainfall in July, with over 20 rainy days and an average total precipitation 215.1 mm.
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Temperatures
Rain 🌧️
More
9
Dry days
22
Rainy days
0
Snow days
31°/21°
Temperatures
16 km/h
Avg max wind
74 %
Avg humidity
Williamson County Weather July
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Temperatures trend during July in Williamson County
See the weather trend as well as the moving average line
July weather in Williamson County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jul. 1 |  Sunny | 27° /16° | 10.3 mm | 7 | |
| Jul. 2 | Sunny | 30° /18° | 0 mm | 8 | |
| Jul. 3 |  Patchy light rain with thunder | 33° /20° | 34.7 mm | 8 | |
| Jul. 4 |  Moderate or heavy rain with thunder | 32° /22° | 6.8 mm | 8 | |
| Jul. 5 |  Patchy rain possible | 30° /21° | 0.9 mm | 7 | |
| Jul. 6 |  Partly cloudy | 30° /20° | 3.9 mm | 7 | |
| Jul. 7 | Sunny | 31° /21° | 4.1 mm | 8 | |
| Jul. 8 | Partly cloudy | 33° /21° | 1.8 mm | 8 | |
| Jul. 9 | Light rain shower | 25° /21° | 22.1 mm | 6 | |
| Jul. 10 |  Fog | 30° /18° | 41 mm | 7 | |
| Jul. 11 | Partly cloudy | 32° /21° | 0 mm | 8 | |
| Jul. 12 | Patchy light rain with thunder | 33° /20° | 16.7 mm | 7 | |
| Jul. 13 | Patchy rain possible | 33° /21° | 7.7 mm | 7 | |
| Jul. 14 | Sunny | 31° /22° | 6.4 mm | 7 | |
| Jul. 15 | Sunny | 33° /23° | 3.6 mm | 8 | |
| Jul. 16 |  Thundery outbreaks possible | 34° /24° | 32 mm | 8 | |
| Jul. 17 | Light rain shower | 30° /23° | 5.7 mm | 7 | |
| Jul. 18 | Patchy rain possible | 28° /20° | 0 mm | 7 | |
| Jul. 19 | Mist | 30° /18° | 0 mm | 7 | |
| Jul. 20 | Sunny | 31° /20° | 0 mm | 8 | |
| Jul. 21 | Patchy rain possible | 33° /22° | 0 mm | 8 | |
| Jul. 22 |  Light drizzle | 32° /21° | 3.5 mm | 7 | |
| Jul. 23 | Light rain shower | 30° /22° | 2.2 mm | 7 | |
| Jul. 24 | Mist | 33° /22° | 0 mm | 7 | |
| Jul. 25 | Patchy rain possible | 31° /23° | 2.7 mm | 7 | |
| Jul. 26 | Light rain shower | 30° /22° | 1 mm | 7 | |
| Jul. 27 | Fog | 31° /22° | 0 mm | 7 | |
| Jul. 28 | Patchy light rain with thunder | 32° /22° | 4.9 mm | 7 | |
| Jul. 29 | Patchy light drizzle | 33° /23° | 1.3 mm | 8 | |
| Jul. 30 | Light rain shower | 35° /23° | 0.4 mm | 8 | |
| Jul. 31 | Sunny | 32° /23° | 1.2 mm | 8 | |
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Important Notice
Our weather forecast for Williamson County in July 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.
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Williamson County in July - FAQ
What are the expected maximum and minimum temperatures in Williamson County during July?
During July, expect a variety of temperatures with highs around 31° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Williamson County during July?
Significant rainfall exceeding 215.1 mm is expected in Williamson County during July, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Williamson County during July?
The average wind speed in Williamson County during July is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
July rainfall patterns in Williamson County
Explore the daily rainfall trends and prepare for Williamson Countys July weather 💧
UV exposure in Williamson County during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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Where is Williamson County?Get accurate weather forecasts for Williamson County, located at latitude 37.774 and longitude -89.026. Stay updated with localized weather information tailored for Williamson County.
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