August weather forecast and climate
San Quentin, CA

Weather in August

The last month of the summer, August, is also an agreeable month in San Quentin, California, with average temperature ranging between min 55.4°F (13°C) and max 71.2°F (21.8°C).

Temperature

In San Quentin, the average high-temperature is essentially the same as in July - a still agreeable 71.2°F (21.8°C). The average low-temperature, in San Quentin, is 55.4°F (13°C).

Humidity

The average relative humidity in San Quentin is 76%.

Rainfall

Months with the least rainfall in San Quentin, California, are June through September Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.

Daylight

The average length of the day in San Quentin is 13.6h.

Sunshine

In August, the average sunshine is 10.9h.

UV index

April, June through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 5 in August transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 temperature in August in San Quentin?

The average high-temperature, in August, is 71.2°F (21.8°C), while the average low-temperature is 55.4°F (13°C).

What is the average humidity in August in San Quentin?

The average relative humidity in August in San Quentin, California, is 76%.

How much does it rain in San Quentin in August?

In August, the rain falls for 1.2 days. Throughout August, 0.04" (1mm) of precipitation is accumulated.

What is the driest month in San Quentin?

Months with the least rainfall are June through September Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.

What is the average length of the day in August in San Quentin?

In August, the average length of the day in San Quentin, California, is 13.6h.

How long on average sun shines in August in San Quentin?

In San Quentin, the average sunshine in August is 10.9h.

When is the highest UV index in San Quentin?

Months with the highest UV index in San Quentin, California, are April, June through September, with an average maximum UV index of 5.

What is the UV index intensity in August in San Quentin?

In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in August
San Quentin, CA

Average temperature in August - San Quentin, CA
  • Average high temperature in August: 71.2°F

The warmest month (with the highest average high temperature) is September (72.3°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in August: 55.4°F

The month with the highest average low temperature is September (56.1°F).
The coldest month (with the lowest average low temperature) is December (45.3°F).

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Average pressure in August
San Quentin, CA

Average pressure in August - San Quentin, CA
  • Average pressure in August: 29.92"

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in August
San Quentin, CA

Average wind speed in August - San Quentin, CA
  • Average wind speed in August: 6.4mph

The windiest month (with the highest average wind speed) is May (7.8mph).
The calmest months (with the lowest average wind speed) are October and November (5.5mph).

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Average humidity in August
San Quentin, CA

Average humidity in August - San Quentin, CA
  • Average humidity in August: 76%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in August
San Quentin, CA

Average rainfall in August - San Quentin, CA
  • Average rainfall in August: 0.04"

The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July, August and September (0.04").

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Average rainfall days in August
San Quentin, CA

Average rainfall days in August - San Quentin, CA
  • Average rainfall days in August: 1.2 days

The month with the highest number of rainy days is March (8.8 days).
Months with the least rainy days are June and August (1.2 days).

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Average daylight in August /
Average sunshine in August
San Quentin, CA

Average daylight in August / Average sunshine in August - San Quentin, CA
  • Average daylight in August: 13.6h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in August: 10.9h

The month with the most sunshine is July (Average sunshine: 11.2h).
The month with the least sunshine is December (Average sunshine: 5.5h).

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Average sunshine days in August
San Quentin, CA

Average sunshine days in August - San Quentin, CA
  • Average sunshine days in August: 24.8 days

The month with the most sunshine days is June (26.4 days).
The month with the least sunshine days is March (20.7 days).

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Average UV index in August
San Quentin, CA

Average UV index in August - San Quentin, CA
  • Average UV index in August: 5

Months with the highest UV index are April, June, July, August and September (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in August
San Quentin, CA

Average cloud cover in August - San Quentin, CA
  • Average cloud cover in August: 25

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).

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Average visibility in August
San Quentin, CA

Average visibility in August - San Quentin, 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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