August weather forecast
Riverdale Park, CA

August, the last month of the summer in Riverdale Park, is another very hot month, with an average temperature varying between 61.7°F (16.5°C) and 96.4°F (35.8°C).

Temperature

The arrival of August sees a recorded average high-temperature of a still torrid 96.4°F (35.8°C), showing little divergence from the previous month's conditions. Riverdale Park experiences a substantial divergence from daytime highs in August, with average lows hovering around a comfortable 61.7°F (16.5°C).

Heat index

The average heat index in August is estimated at a torrid 102.2°F (39°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Heat index determinations are made taking into account the shade and light air movements. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In August, the average relative humidity is 40%.

Rainfall

July and August are months with the least rain when the rain falls for 0.9 days and typically aggregates up to 0.04" (1mm) of rain.

Daylight

The average length of the day in August in Riverdale Park is 13h and 34min.
On the first day of August in Riverdale Park, sunrise is at 6:08 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:34 pm PDT.

Sunshine

In Riverdale Park, the average sunshine in August is 12h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum daily UV index of 7 during August morphs into the following directions:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.