August Weather in Butte, United States

Last updated: June 24, 2025

In August, the average temperature in Butte, United States hovers around 23°C (74°F), with a minimum of 10°C (50°F) and soaring up to a maximum of 36°C (97°F). Expect 80 mm (3.2 in) of precipitation spread over 11 days, contributing to a high average humidity of 82%. Whether you’re planning outdoor adventures or cozy indoor activities, be prepared for the varying weather conditions!

August Temperature in Butte

In August in Butte, the average temperature is 23°C (74°F). Maximum can reach 36°C (97°F), and the minimum can be as low as 10°C (50°F). This makes Butte an ideal destination for travelers seeking warm weather while still having the option for cooler evenings.

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

The chart illustrates August temperature patterns in Butte, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Butte, August typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (50°F).

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

August Precipitation in Butte

In Butte in August, the precipitation amount is 80 mm (3.2 in) spread over 11 days.

August Precipitation Trends in Butte

The chart displays monthly precipitation patterns in Butte, 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 Butte, August typically receives around 80 mm (3.2 inches) of precipitation spread over approximately 11 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 Butte

In Butte in August, humidity is 82%. With an average temperature of 23°C (74°F), this humidity feels like you are walking through a warm, damp blanket, making travel a bit uncomfortable and sticky as you navigate the air thick with moisture.

August Average Humidity in Butte

This chart illustrates the average monthly humidity levels in Butte, 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 Butte is approximately 82%, 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 Butte

In Butte 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 Butte.

Maximum UV Index Levels in Butte for August

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

Data source: Butte 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 Butte Compares to Other Months

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

This table compares monthly weather conditions in Butte, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	21 mm (0.8 inches)	77%	moderate
February Weather	-6°C (22°F)	22 mm (0.9 inches)	81%	moderate
March Weather	3°C (37°F)	69 mm (2.7 inches)	71%	high
April Weather	7°C (46°F)	58 mm (2.3 inches)	75%	very high
May Weather	15°C (59°F)	127 mm (5.0 inches)	74%	very high
June Weather	23°C (74°F)	69 mm (2.7 inches)	82%	extreme
July Weather	25°C (77°F)	81 mm (3.2 inches)	84%	very high
August Weather	23°C (74°F)	80 mm (3.2 inches)	82%	very high
September Weather	19°C (67°F)	68 mm (2.7 inches)	75%	very high
October Weather	9°C (49°F)	72 mm (2.8 inches)	72%	moderate
November Weather	3°C (38°F)	21 mm (0.8 inches)	81%	moderate
December Weather	-2°C (28°F)	42 mm (1.6 inches)	79%	low