August Weather in South Wenatchee, United States

Last updated: June 24, 2025

In August, the average temperature in South Wenatchee, United States hovers around 21°C (70°F), with a minimum of 6°C (43°F) and a maximum reaching up to 37°C (99°F). During this time, expect a modest precipitation of 5 mm (0.2 in) spread across just 1 day, while the air maintains an average humidity of 63%.

August Temperature in South Wenatchee

In August in South Wenatchee, the average temperature is 21°C (70°F), with maximums reaching up to 37°C (99°F) and minimums dropping as low as 6°C (43°F). This makes it an ideal time for travelers to experience a pleasant climate while exploring the best that South Wenatchee has to offer.

August Weather in South Wenatchee: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in South Wenatchee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Wenatchee, August typically has an average temperature of 21°C (70°F), with highs reaching up to 37°C (99°F) and lows dropping to around 6°C (43°F).

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

August Precipitation in South Wenatchee

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

August Precipitation Trends in South Wenatchee

The chart displays monthly precipitation patterns in South Wenatchee, 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 South Wenatchee, 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.

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Millimeters (mm) Inches (in)

August Humidity in South Wenatchee

In South Wenatchee in August, humidity is 63%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making it perfect for leisurely exploration but slightly sticky for prolonged outdoor activities.

August Average Humidity in South Wenatchee

This chart illustrates the average monthly humidity levels in South Wenatchee, 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 South Wenatchee 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 South Wenatchee

In South Wenatchee 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 South Wenatchee.

Maximum UV Index Levels in South Wenatchee for August

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

Data source: South Wenatchee 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 South Wenatchee Compares to Other Months

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

This table compares monthly weather conditions in South Wenatchee, 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 (28°F)	84 mm (3.3 inches)	86%	low
February Weather	-2°C (29°F)	76 mm (3.0 inches)	86%	moderate
March Weather	3°C (38°F)	46 mm (1.8 inches)	87%	high
April Weather	8°C (46°F)	41 mm (1.6 inches)	84%	high
May Weather	13°C (56°F)	26 mm (1.0 inches)	81%	very high
June Weather	17°C (63°F)	14 mm (0.5 inches)	82%	very high
July Weather	21°C (70°F)	3 mm (0.1 inches)	79%	very high
August Weather	21°C (70°F)	5 mm (0.2 inches)	63%	very high
September Weather	15°C (60°F)	26 mm (1.0 inches)	62%	high
October Weather	8°C (46°F)	56 mm (2.2 inches)	83%	moderate
November Weather	2°C (37°F)	64 mm (2.5 inches)	89%	moderate
December Weather	-1°C (30°F)	79 mm (3.1 inches)	88%	low