August Weather in Ellensburg, United States

Last updated: June 24, 2025

The average temperature in Ellensburg, United States during August hovers around 21°C (69°F). Temperatures can vary significantly, with minimums dropping to 6°C (43°F) and maximums soaring to 37°C (99°F). During this month, you can expect 5 mm (0.2 in) of precipitation spread over just 1 day, while the average humidity sits at a comfortable 63%. Enjoy your stay!

August Temperature in Ellensburg

In August in Ellensburg, the average temperature is 21°C (69°F). Maximum temperatures can reach 37°C (99°F), while minimum temperatures can drop as low as 6°C (43°F). Overall, it's a great time to visit if you enjoy warm weather with the possibility of cooler evenings.

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

The chart illustrates August temperature patterns in Ellensburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ellensburg, August typically has an average temperature of 21°C (69°F), with highs reaching up to 37°C (99°F) and lows dropping to around 6°C (43°F).

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

August Precipitation in Ellensburg

In Ellensburg in August, the precipitation amount is 5 mm (0.2 in) over a duration of 1 day.

August Precipitation Trends in Ellensburg

The chart displays monthly precipitation patterns in Ellensburg, 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 Ellensburg, August typically receives around 5 mm (0.2 inches) of precipitation spread over approximately 1 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 Ellensburg

In Ellensburg in August humidity is 63%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace, making it a comfortable experience for traveling, but you might want to stay hydrated and take occasional breaks in shaded areas to truly enjoy the sights.

August Average Humidity in Ellensburg

This chart illustrates the average monthly humidity levels in Ellensburg, 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 Ellensburg is approximately 63%, 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 Ellensburg

In Ellensburg 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 Ellensburg.

Maximum UV Index Levels in Ellensburg for August

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

Data source: Ellensburg 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 Ellensburg Compares to Other Months

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

This table compares monthly weather conditions in Ellensburg, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	75 mm (2.9 inches)	86%	low
February Weather	-1°C (31°F)	75 mm (3.0 inches)	86%	moderate
March Weather	3°C (38°F)	44 mm (1.7 inches)	87%	high
April Weather	8°C (46°F)	38 mm (1.5 inches)	84%	high
May Weather	13°C (56°F)	23 mm (0.9 inches)	81%	very high
June Weather	17°C (63°F)	13 mm (0.5 inches)	82%	very high
July Weather	21°C (70°F)	1 mm (0.1 inches)	79%	very high
August Weather	21°C (69°F)	5 mm (0.2 inches)	63%	very high
September Weather	15°C (60°F)	24 mm (1.0 inches)	62%	very high
October Weather	8°C (46°F)	53 mm (2.1 inches)	83%	moderate
November Weather	2°C (37°F)	58 mm (2.3 inches)	89%	moderate
December Weather	-1°C (31°F)	72 mm (2.8 inches)	88%	low