August weather forecast
San Anselmo, CA

Weather in August

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

Temperature

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

Humidity

In August, the average relative humidity is 76%.

Rainfall

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

Daylight

In San Anselmo, the average length of the day in August is 13h and 35min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:19 pm. On the last day of August, sunrise is at 6:39 am and sunset at 7:41 pm PDT.

Sunshine

In August, the average sunshine is 10.9h.

UV index

The months with the highest UV index in San Anselmo, California, are April, June through September, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 5 in August transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.
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FAQ

What is the temperature in August in San Anselmo?

The average high-temperature, in August, in San Anselmo, 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 Anselmo?

In August, the average relative humidity in San Anselmo, California, is 76%.

What is the driest month in San Anselmo?

June through September are months with the least rain in San Anselmo, California, when the rain falls for 1.2 days and typically aggregates up to 0.04" (1mm) of rain.

How much does it rain in San Anselmo in August?

In San Anselmo, California, in August, during 1.2 rainfall days, 0.04" (1mm) of precipitation is typically accumulated.

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

In San Anselmo, the average day length in August is 13h and 35min.

What time are sunrise and sunset in August in San Anselmo?

On the first day of August in San Anselmo, California, sunrise is at 6:13 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 7:41 pm PDT.

How many hours of sunshine does San Anselmo have in August?

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

What is the month with the highest UV index in San Anselmo?

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

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

In San Anselmo, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
San Anselmo, CA

Average temperature in August - San Anselmo, 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 Anselmo, CA

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

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

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Average wind speed in August
San Anselmo, CA

Average wind speed in August - San Anselmo, 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 Anselmo, CA

Average humidity in August - San Anselmo, 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 Anselmo, CA

Average rainfall in August - San Anselmo, 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 Anselmo, CA

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

The month with the highest number of rainy days is March (8.8 days).
The 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 Anselmo, CA

Average daylight in August / Average sunshine in August - San Anselmo, CA
  • Average daylight in August: 13h and 35min

The month with the longest days is June (Average daylight: 14h and 46min).
The month with the shortest days is December (Average daylight: 9h and 35min).

  • Average sunshine in August: 10h and 54min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in August
San Anselmo, CA

Average sunshine days in August - San Anselmo, 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 Anselmo, CA

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

The months with the highest UV index are April, June, July, August and September (UV index 5).
The 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 Anselmo, CA

Average cloud cover in August - San Anselmo, 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 Anselmo, CA

Average visibility in August - San Anselmo, 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).

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