July Weather in Williston, United States

Last updated: June 24, 2025

In July, the average temperature in Williston, United States reaches a comfortable 22°C (71°F). However, temperatures can vary widely, with a minimum of 8°C (47°F) and a scorching maximum of 38°C (100°F). Expect about 58 mm (2.3 in) of precipitation over 6 days, contributing to an average humidity level of 76%.

July Temperature in Williston

In July in Williston, the average temperature is 22°C (71°F). The maximum can reach 38°C (100°F), while the minimum can be as low as 8°C (47°F). This combination of temperatures makes Williston an ideal destination for travelers looking to enjoy a variety of outdoor activities and experiences.

July Weather in Williston: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Williston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Williston, July typically has an average temperature of 22°C (71°F), with highs reaching up to 38°C (100°F) and lows dropping to around 8°C (47°F).

Data source: Temperature data for Williston generated using information from the Copernicus Climate Change Service.

July Precipitation in Williston

In Williston in July, the precipitation amount is 58 mm (2.3 in) over the course of 6 days.

July Precipitation Trends in Williston

The chart displays monthly precipitation patterns in Williston, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Williston, July typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

July Humidity in Williston

In Williston in July, humidity is 76%. With an average temperature of 22°C (71°F), this humidity feels like traveling through a warm, dense mist that clings to your skin, making every step feel heavier and the air seem thicker, which can be quite draining for outdoor activities.

July Average Humidity in Williston

This chart illustrates the average monthly humidity levels in Williston, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Williston is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Williston

In Williston in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Williston.

Maximum UV Index Levels in Williston for July

The chart shows the monthly maximum UV Index (UVI) for Williston in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Williston typically reaches 9, which falls under the very high exposure category.

Data source: Williston July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How July Weather in Williston Compares to Other Months

Weather in Williston varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Williston, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Williston, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (14°F)	11 mm (0.4 inches)	89%	low
February Weather	-12°C (11°F)	18 mm (0.7 inches)	92%	moderate
March Weather	-2°C (28°F)	23 mm (0.9 inches)	84%	moderate
April Weather	3°C (38°F)	28 mm (1.1 inches)	74%	very high
May Weather	12°C (55°F)	45 mm (1.8 inches)	73%	very high
June Weather	19°C (66°F)	74 mm (2.9 inches)	69%	very high
July Weather	22°C (71°F)	58 mm (2.3 inches)	76%	very high
August Weather	20°C (68°F)	44 mm (1.7 inches)	74%	very high
September Weather	15°C (58°F)	59 mm (2.3 inches)	65%	high
October Weather	5°C (42°F)	30 mm (1.2 inches)	71%	moderate
November Weather	-2°C (29°F)	19 mm (0.7 inches)	84%	low
December Weather	-7°C (20°F)	19 mm (0.8 inches)	92%	low