August Weather in Grantsville, United States

Last updated: June 24, 2025

In Grantsville, United States, the average temperature in August hovers around 26°C (78°F), offering a pleasant climate for outdoor activities. You can expect temperatures to range from a cool 10°C (51°F) to a sweltering 39°C (102°F). During this month, rainfall amounts to approximately 18 mm (0.7 in) over 2 days, while the average humidity sits at a comfortable 34%. Enjoy the best of this beautiful destination!

August Temperature in Grantsville

In August in Grantsville, the average temperature is 26°C (78°F). Maximums can reach 39°C (102°F), while minimums can drop to as low as 10°C (51°F). Be prepared for a wide range of temperatures, ensuring you pack accordingly for your travels.

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

The chart illustrates August temperature patterns in Grantsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grantsville, August typically has an average temperature of 26°C (78°F), with highs reaching up to 39°C (102°F) and lows dropping to around 10°C (51°F).

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

August Precipitation in Grantsville

In Grantsville in August, the precipitation amount is 18 mm (0.7 in) over the course of 2 days.

August Precipitation Trends in Grantsville

The chart displays monthly precipitation patterns in Grantsville, 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 Grantsville, August typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 2 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Grantsville

In Grantsville in August humidity is 34%. With average temperature 26°C (78°F), this humidity feels like a pleasant environment for traveling, providing a comfortable warmth that encourages outdoor exploration without overwhelming stickiness.

August Average Humidity in Grantsville

This chart illustrates the average monthly humidity levels in Grantsville, 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 Grantsville is approximately 34%, 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 Grantsville

In Grantsville 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 Grantsville.

Maximum UV Index Levels in Grantsville for August

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

Data source: Grantsville 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 Grantsville Compares to Other Months

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

This table compares monthly weather conditions in Grantsville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	40 mm (1.6 inches)	85%	moderate
February Weather	1°C (34°F)	47 mm (1.8 inches)	86%	moderate
March Weather	6°C (43°F)	61 mm (2.4 inches)	79%	high
April Weather	10°C (50°F)	56 mm (2.2 inches)	71%	very high
May Weather	15°C (60°F)	49 mm (1.9 inches)	59%	extreme
June Weather	23°C (73°F)	14 mm (0.5 inches)	55%	extreme
July Weather	27°C (81°F)	16 mm (0.6 inches)	44%	extreme
August Weather	26°C (78°F)	18 mm (0.7 inches)	34%	extreme
September Weather	20°C (68°F)	31 mm (1.2 inches)	42%	very high
October Weather	10°C (51°F)	33 mm (1.3 inches)	63%	high
November Weather	5°C (41°F)	27 mm (1.1 inches)	81%	moderate
December Weather	-1°C (31°F)	36 mm (1.4 inches)	84%	moderate