August weather forecast and climate
Spring Valley, CA

Weather in August

The last month of the summer, August, is also a moderately hot month in Spring Valley, California, with average temperature varying between 82.9°F (28.3°C) and 65.8°F (18.8°C).

Temperature

The warmest month is August, with an average high-temperature of 82.9°F (28.3°C) and an average low-temperature of 65.8°F (18.8°C).

Heat index

The average heat index in August is appraised at a hot 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like wind, metabolic differences, clothing, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In August, the average relative humidity in Spring Valley, California, is 61%.

Rainfall

In August, the rain falls for 1.9 days. Throughout August, 0.08" (2mm) of precipitation is accumulated. In Spring Valley, California, during the entire year, the rain falls for 33 days and collects up to 2.52" (64mm) of precipitation.

Daylight

In August, the average length of the day in Spring Valley, California, is 13.3h.

Sunshine

In August, the average sunshine in Spring Valley is 11.9h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 6 in August interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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.
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FAQ

What is the warmest month in Spring Valley?

The warmest month is August, with an average high-temperature of 82.9°F (28.3°C) and an average low-temperature of 65.8°F (18.8°C).

What is the temperature in August in Spring Valley?

In August, in Spring Valley, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 65.8°F (18.8°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that factores the actual air temperature with the relative humidity, is estimated at 86°F (30°C).

What is the average humidity in August in Spring Valley?

The average relative humidity in August in Spring Valley is 61%.

How many days does it rain in August in Spring Valley?

In Spring Valley, California, in August, it is raining for 1.9 days, with typically 0.08" (2mm) of accumulated precipitation.

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

In Spring Valley, the average length of the day in August is 13.3h.

How long on average sun shines in August in Spring Valley?

In August, the average sunshine in Spring Valley, California, is 11.9h.

What is the month with the highest UV index in Spring Valley?

June through September, with an average maximum UV index of 6, are months with the highest UV index in Spring Valley, California.

How high is the UV index in August in Spring Valley?

In August, the average daily maximum UV index in Spring Valley, California, is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.

Average temperature in August
Spring Valley, CA

Average temperature in August - Spring Valley, CA
  • Average high temperature in August: 82.9°F

The warmest month (with the highest average high temperature) is August (82.9°F).
The month with the lowest average high temperature is December (64.4°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).

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Average pressure in August
Spring Valley, CA

Average pressure in August - Spring Valley, CA
  • Average pressure in August: 29.88"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed in August
Spring Valley, CA

Average wind speed in August - Spring Valley, CA
  • Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is April (5.6mph).
The calmest month (with the lowest average wind speed) is October (4.5mph).

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Average humidity in August
Spring Valley, CA

Average humidity in August - Spring Valley, CA
  • Average humidity in August: 61%

The month with the highest relative humidity is May (67%).
The month with the lowest relative humidity is November (54%).

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Average rainfall in August
Spring Valley, CA

Average rainfall in August - Spring Valley, CA
  • Average rainfall in August: 0.08"

The wettest month (with the highest rainfall) is February (0.55").
The driest months (with the least rainfall) are June, July and October (0.04").

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Average rainfall days in August
Spring Valley, CA

Average rainfall days in August - Spring Valley, CA
  • Average rainfall days in August: 1.9 days

The month with the highest number of rainy days is March (5.3 days).
The month with the least rainy days is June (0.8 days).

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

Average daylight in August / Average sunshine in August - Spring Valley, CA
  • Average daylight in August: 13.3h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in August: 11.9h

The month with the most sunshine is July (Average sunshine: 12.1h).
Months with the least sunshine are February and December (Average sunshine: 6.7).

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Average sunshine days in August
Spring Valley, CA

Average sunshine days in August - Spring Valley, CA
  • Average sunshine days in August: 27.8 days

The month with the most sunshine days is October (28.9 days).
The month with the least sunshine days is February (23.4 days).

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Average UV index in August
Spring Valley, CA

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

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in August
Spring Valley, CA

Average cloud cover in August - Spring Valley, CA
  • Average cloud cover in August: 7

Months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in August
Spring Valley, CA

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

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

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