August Weather in Fossil, United States

Last updated: June 24, 2025

In August, the average temperature in Fossil, United States hovers around 23°C (74°F). Expect a range of temperatures, with the minimum dipping to 6°C (43°F) and the maximum soaring up to 39°C (102°F). Additionally, anticipate 7 mm (0.3 in) of precipitation over the course of 1 day and an average humidity level of 62%.

August Temperature in Fossil

In August in Fossil, the average temperature is 23°C (74°F). Maximum temperatures can reach 39°C (102°F), while minimums can dip as low as 6°C (43°F). Be prepared for a wide range of temperatures during your travels, making it essential to pack accordingly for both warm days and cooler nights.

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

The chart illustrates August temperature patterns in Fossil, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fossil, August typically has an average temperature of 23°C (74°F), with highs reaching up to 39°C (102°F) and lows dropping to around 6°C (43°F).

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

August Precipitation in Fossil

In Fossil in August, the precipitation amount is 7 mm (0.3 in) over the course of 1 day.

August Precipitation Trends in Fossil

The chart displays monthly precipitation patterns in Fossil, 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 Fossil, August typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 1 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 Fossil

In Fossil in August humidity is 62%. With an average temperature of 23°C (74°F), this humidity feels like a warm, slightly sticky embrace, making it essential for travelers to stay hydrated and wear breathable clothing while exploring.

August Average Humidity in Fossil

This chart illustrates the average monthly humidity levels in Fossil, 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 Fossil is approximately 62%, 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 Fossil

In Fossil in August, 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 Fossil.

Maximum UV Index Levels in Fossil for August

The chart shows the monthly maximum UV Index (UVI) for Fossil 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 Fossil typically reaches 9, which falls under the very high exposure category.

Data source: Fossil 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 Fossil Compares to Other Months

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

This table compares monthly weather conditions in Fossil, 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 (34°F)	51 mm (2.0 inches)	86%	low
February Weather	1°C (35°F)	68 mm (2.7 inches)	87%	moderate
March Weather	5°C (41°F)	51 mm (2.0 inches)	86%	high
April Weather	9°C (48°F)	51 mm (2.0 inches)	85%	high
May Weather	14°C (57°F)	33 mm (1.3 inches)	80%	very high
June Weather	19°C (66°F)	17 mm (0.7 inches)	82%	very high
July Weather	23°C (74°F)	1 mm (0.0 inches)	78%	very high
August Weather	23°C (74°F)	7 mm (0.3 inches)	62%	very high
September Weather	17°C (63°F)	21 mm (0.8 inches)	59%	very high
October Weather	10°C (50°F)	35 mm (1.4 inches)	78%	moderate
November Weather	5°C (41°F)	52 mm (2.0 inches)	88%	moderate
December Weather	1°C (34°F)	54 mm (2.1 inches)	88%	low