August Weather in Gillette, United States

Last updated: June 24, 2025

In August, the average temperature in Gillette, United States hovers around 21°C (71°F). However, it can swing from a chilly 6°C (44°F) to a scorching 38°C (100°F). Expect around 35 mm (1.4 in) of precipitation over 7 days, coupled with a high average humidity of 85%. Prepare accordingly to enjoy the climate!

August Temperature in Gillette

In August in Gillette, the average temperature is 21°C (71°F). Maximums can reach 38°C (100°F) and minimums can be as low as 6°C (44°F). This diverse climate makes Gillette an ideal destination for travelers seeking both warm and cooler experiences.

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

The chart illustrates August temperature patterns in Gillette, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gillette, August typically has an average temperature of 21°C (71°F), with highs reaching up to 38°C (100°F) and lows dropping to around 6°C (44°F).

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

August Precipitation in Gillette

In Gillette in August, the precipitation amount is 35 mm (1.4 in) over the course of 7 days.

August Precipitation Trends in Gillette

The chart displays monthly precipitation patterns in Gillette, 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 Gillette, August typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 7 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 Gillette

In Gillette in August humidity is 85%. With an average temperature of 21°C (71°F), this humidity feels like a warm, heavy blanket enveloping you, making travel a bit more tiring but also creating an atmosphere rich with the scent of blooming flora and vibrant street life.

August Average Humidity in Gillette

This chart illustrates the average monthly humidity levels in Gillette, 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 Gillette is approximately 85%, 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 Gillette

In Gillette in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Gillette.

Maximum UV Index Levels in Gillette for August

The chart shows the monthly maximum UV Index (UVI) for Gillette 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 Gillette typically reaches 10, which falls under the very high exposure category.

Data source: Gillette 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 Gillette Compares to Other Months

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

This table compares monthly weather conditions in Gillette, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	19 mm (0.8 inches)	78%	moderate
February Weather	-5°C (23°F)	26 mm (1.0 inches)	79%	moderate
March Weather	3°C (38°F)	33 mm (1.3 inches)	71%	high
April Weather	6°C (42°F)	61 mm (2.4 inches)	70%	very high
May Weather	12°C (53°F)	67 mm (2.6 inches)	75%	very high
June Weather	19°C (67°F)	39 mm (1.6 inches)	82%	extreme
July Weather	23°C (74°F)	56 mm (2.2 inches)	84%	extreme
August Weather	21°C (71°F)	35 mm (1.4 inches)	85%	very high
September Weather	16°C (62°F)	43 mm (1.7 inches)	79%	very high
October Weather	6°C (44°F)	47 mm (1.9 inches)	75%	moderate
November Weather	3°C (37°F)	20 mm (0.8 inches)	75%	moderate
December Weather	-1°C (30°F)	24 mm (0.9 inches)	81%	low