July weather forecast
Walnut Grove, CA

July, like June, is a hot summer month in Walnut Grove, California, with an average temperature varying between 57.2°F (14°C) and 91°F (32.8°C).

Temperature

The month of July, characterized by an average high of 91°F (32.8°C) and a low of 57.2°F (14°C), is recognized as the warmest.

Heat index

The heat index in July is computed to be a torrid 96.8°F (36°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In Walnut Grove, the average relative humidity in July is 50%.

Rainfall

July is the last month it rains. During 0.8 rainfall days, in July, Walnut Grove aggregates 0.04" (1mm) of precipitation. Throughout the year, there are 68.7 rainfall days, and 11.18" (284mm) of precipitation is accumulated.

Daylight

In July, the average length of the day in Walnut Grove, California, is 14h and 31min.
On the first day of the month, sunrise is at 5:46 am and sunset at 8:33 pm. On the last day of July, sunrise is at 6:08 am and sunset at 8:16 pm PDT.

Sunshine

The month with the most sunshine is July, with an average of 12.1h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 during July translates into the following directions:
Resist extreme sun exposure. Guarding against solar damage is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.