August Weather in Walnut, United States

Last updated: June 24, 2025

In Walnut, United States, the average temperature in August hovers around 26°C (79°F). During this time, you can expect a comfortable minimum of 16°C (61°F) and a warm maximum of 36°C (98°F). Be prepared for some rain, as the region receives an average precipitation of 116 mm (4.6 in) spread over approximately 12 days. With an average humidity level of 73%, the air can feel quite moist, adding to the tropical vibe of the area.

August Temperature in Walnut

In August in Walnut, the average temperature is 26°C (79°F), with maximums reaching 36°C (98°F) and minimums dropping as low as 16°C (61°F). This makes it an ideal time for travelers looking to enjoy warm weather while also having the option for cooler evenings.

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

The chart illustrates August temperature patterns in Walnut, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walnut, August typically has an average temperature of 26°C (79°F), with highs reaching up to 36°C (98°F) and lows dropping to around 16°C (61°F).

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

August Precipitation in Walnut

In Walnut in August, the precipitation amount is 116 mm (4.6 in) over a span of 12 days.

August Precipitation Trends in Walnut

The chart displays monthly precipitation patterns in Walnut, 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 Walnut, August typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 12 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 Walnut

In Walnut in August, humidity is 73%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace, making travel slightly uncomfortable as you navigate through the heat with a constant sheen of sweat on your skin.

August Average Humidity in Walnut

This chart illustrates the average monthly humidity levels in Walnut, 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 Walnut is approximately 73%, 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 Walnut

In Walnut 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 Walnut.

Maximum UV Index Levels in Walnut for August

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

Data source: Walnut 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 Walnut Compares to Other Months

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

This table compares monthly weather conditions in Walnut, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	107 mm (4.2 inches)	86%	moderate
February Weather	8°C (47°F)	176 mm (6.9 inches)	85%	high
March Weather	13°C (55°F)	157 mm (6.2 inches)	84%	very high
April Weather	16°C (61°F)	148 mm (5.8 inches)	81%	very high
May Weather	22°C (71°F)	109 mm (4.3 inches)	83%	extreme
June Weather	26°C (78°F)	112 mm (4.4 inches)	83%	extreme
July Weather	27°C (81°F)	131 mm (5.2 inches)	80%	extreme
August Weather	26°C (79°F)	116 mm (4.6 inches)	73%	very high
September Weather	24°C (76°F)	122 mm (4.8 inches)	70%	very high
October Weather	18°C (65°F)	113 mm (4.4 inches)	73%	high
November Weather	10°C (50°F)	79 mm (3.1 inches)	85%	moderate
December Weather	8°C (47°F)	147 mm (5.8 inches)	88%	moderate