August Weather in Williston, United States

Last updated: June 24, 2025

In August, the average temperature in Williston, United States hovers around 27°C (81°F). Temperatures can vary significantly, with a minimum of 16°C (61°F) and a scorching maximum of 36°C (97°F). Expect 144 mm (5.7 in) of precipitation spread over 18 days, contributing to an average humidity of 81%.

August Temperature in Williston

In August in Williston, the average temperature is 27°C (81°F). Maximums can reach 36°C (97°F), and minimums can drop to as low as 16°C (61°F). Be prepared for warm days and cooler evenings while traveling to Williston during this time.

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

The chart illustrates August 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, August typically has an average temperature of 27°C (81°F), with highs reaching up to 36°C (97°F) and lows dropping to around 16°C (61°F).

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

August Precipitation in Williston

In Williston in August, the precipitation amount is 144 mm (5.7 in) over the course of 18 days.

August Precipitation Trends in Williston

The chart displays monthly precipitation patterns in Williston, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Williston, August typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 18 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

August Humidity in Williston

In Williston in August humidity is 81%. With an average temperature of 27°C (81°F), this humidity feels like a warm, heavy blanket enveloping you, making travel quite uncomfortable as it can quickly drain your energy and require frequent hydration breaks.

August Average Humidity in Williston

This chart illustrates the average monthly humidity levels in Williston, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Williston is approximately 81%, offering insight into how humid the weather typically is during this month.

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

August UV Index in Williston

In Williston in August, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Williston.

Maximum UV Index Levels in Williston for August

The chart shows the monthly maximum UV Index (UVI) for Williston in August, 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 August, the maximum UV index in Williston typically reaches 11, which falls under the extreme exposure category.

Data source: Williston August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	88 mm (3.4 inches)	86%	moderate
February Weather	12°C (54°F)	110 mm (4.3 inches)	81%	high
March Weather	15°C (59°F)	81 mm (3.2 inches)	81%	very high
April Weather	18°C (66°F)	117 mm (4.6 inches)	79%	very high
May Weather	23°C (74°F)	102 mm (4.0 inches)	75%	extreme
June Weather	26°C (79°F)	111 mm (4.4 inches)	75%	extreme
July Weather	28°C (82°F)	143 mm (5.6 inches)	80%	extreme
August Weather	27°C (81°F)	144 mm (5.7 inches)	81%	extreme
September Weather	25°C (78°F)	78 mm (3.1 inches)	83%	very high
October Weather	21°C (69°F)	78 mm (3.1 inches)	78%	very high
November Weather	13°C (55°F)	60 mm (2.4 inches)	85%	high
December Weather	11°C (51°F)	122 mm (4.8 inches)	87%	moderate