August weather forecast
Garden Valley, CA

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Weather in August

August, the last month of the summer in Garden Valley, is another tropical month, with an average temperature varying between 56.8°F (13.8°C) and 88.3°F (31.3°C).

Temperature

In August, the average high-temperature registers at a still tropical 88.3°F (31.3°C), nearly identical to July's 88.9°F (31.6°C). Against the backdrop of high daytime temperatures, an average low-temperature of 56.8°F (13.8°C) is noted during August nights.

Heat index

August's mean heat index is evaluated at a tropical 87.8°F (31°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

In Garden Valley, the average relative humidity in August is 40%.

Rainfall

Months with rainfall in Garden Valley are January through June, August through December. August is the first month it rains. Throughout August, in the average 1.3 rainfall days, it receives 0.04" (1mm) of precipitation. Throughout the year, there are 86.4 rainfall days, and 29.69" (754mm) of precipitation is accumulated.

Snowfall

In Garden Valley, snow does not fall in May through October.

Daylight

The average length of the day in August is 13h and 38min.
On the first day of the month, sunrise is at 6:05 am and sunset at 8:14 pm. On the last day of August, sunrise is at 6:32 am and sunset at 7:34 pm PDT.

Sunshine

In August, the average sunshine is 12h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: An average UV index of 6 in August transforms into this advice:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

The high-temperature, in August, in Garden Valley, is 88.3°F (31.3°C), while the low-temperature averages to 56.8°F (13.8°C). The average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 87.8°F (31°C).

What is the average humidity in August?

In Garden Valley, the average relative humidity in August is 40%.

When does it start raining?

August is the first month it rains. Throughout August, in the average 1.3 rainfall days, it receives 0.04" (1mm) of precipitation.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Garden Valley have in August?

The average day length in August is 13h and 38min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:05 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:34 pm PDT.

How long on average sun shines in August?

In Garden Valley, the average sunshine duration in August is 12h.

What are the months with the highest UV index?

The months with the highest UV index in Garden Valley are June through August, with an average maximum UV index of 6.

What is the UV index reading in August in Garden Valley?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Garden Valley, CA

Average temperature in August - Garden Valley, CA
  • Average high temperature in August: 88.3°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is December (50.7°F).

  • Average low temperature in August: 56.8°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is December (36°F).

Average pressure in August
Garden Valley, CA

Average pressure in August - Garden Valley, CA
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in August
Garden Valley, CA

Average wind speed in August - Garden Valley, CA
  • Average wind speed in August: 4.2mph

The windiest month (with the highest average wind speed) is February (6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in August
Garden Valley, CA

Average humidity in August - Garden Valley, CA
  • Average humidity in August: 40%

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is July (39%).

Average rainfall in August
Garden Valley, CA

Average rainfall in August - Garden Valley, CA
  • Average rainfall in August: 0.04"

The wettest month (with the highest rainfall) is March (5.98").
The driest month (with the least rainfall) is July (0").

Average rainfall days in August
Garden Valley, CA

Average rainfall days in August - Garden Valley, CA
  • Average rainfall days in August: 1.3 days

The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is July (0.9 days).

Average snowfall in August
Garden Valley, CA

Average snowfall in August - Garden Valley, CA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (5.16").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Garden Valley, CA

Average snowfall days in August - Garden Valley, CA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Garden Valley, CA

Average daylight in August / Average sunshine in August - Garden Valley, CA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 12h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

Average sunshine days in August
Garden Valley, CA

Average sunshine days in August - Garden Valley, CA
  • Average sunshine days in August: 29.1 days

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (13.8 days).

Average UV index in August
Garden Valley, CA

Average UV index in August - Garden Valley, CA
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is November (UV index 2).

Average cloud cover in August
Garden Valley, CA

Average cloud cover in August - Garden Valley, CA
  • Average cloud cover in August: 5

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 4).

Average visibility in August
Garden Valley, CA

Average visibility in August - Garden Valley, CA
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Garden Valley, California, USA

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