August weather forecast
South Santa Rosa, CA

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Weather in August

August, the last month of the summer in South Santa Rosa, is another warm month, with an average temperature ranging between min 55°F (12.8°C) and max 79.9°F (26.6°C).

Temperature

The months of July and August see the peak of South Santa Rosa's temperatures, averaging a high of 79.9°F (26.6°C).

Humidity

In South Santa Rosa, the average relative humidity in August is 67%.

Rainfall

The months with the least rainfall are June through September Rain falls for 0.5 days and accumulates 0.04" (1mm) of rain.

Daylight

In South Santa Rosa, the average length of the day in August is 13h and 37min.
On the first day of August, sunrise is at 6:13 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:41 pm PDT.

Sunshine

In South Santa Rosa, the average sunshine in August is 11.8h.

UV index

In South Santa Rosa, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 5 in August converts into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What month is the hottest in South Santa Rosa?

South Santa Rosa experiences peak temperatures, averaging a high-temperature of 79.9°F (26.6°C) during July and August.

What is the temperature in August in South Santa Rosa?

The average high-temperature and low-temperature in South Santa Rosa, California, during August are 79.9°F (26.6°C) and 55°F (12.8°C) respectively.

What is the average humidity in August in South Santa Rosa?

In August, the average relative humidity in South Santa Rosa is 67%.

What is the driest month in South Santa Rosa?

The months with the least rainfall in South Santa Rosa are June through September Rain falls for 0.5 days and accumulates 0.04" (1mm) of rain.

How many days does it rain in August in South Santa Rosa?

In South Santa Rosa, in August, during 0.5 rainfall days, 0.04" (1mm) of precipitation is typically accumulated.

What is the average length of the day in August in South Santa Rosa?

In August, the average day length in South Santa Rosa is 13h and 37min.

What time are sunrise and sunset in August in South Santa Rosa?

In August, on the first day of the month, sunrise is at 6:13 am and sunset at 8:20 pm. On the last day of the month, in South Santa Rosa, California, sunrise is at 6:40 am and sunset at 7:41 pm PDT.

How long on average sun shines in August in South Santa Rosa?

In South Santa Rosa, the average sunshine duration in August is 11.8h.

What is the UV index reading in August in South Santa Rosa?

The average daily maximum UV index in August in South Santa Rosa is 5. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
South Santa Rosa, CA

Average temperature in August - South Santa Rosa, CA
  • Average high temperature in August: 79.9°F

The warmest months (with the highest average high temperature) are July and August (79.9°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in August: 55°F

The months with the highest average low temperature are August and September (55°F).
The coldest month (with the lowest average low temperature) is December (42.4°F).

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Average pressure in August
South Santa Rosa, CA

Average pressure in August - South Santa Rosa, 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
South Santa Rosa, CA

Average wind speed in August - South Santa Rosa, CA
  • Average wind speed in August: 5.1mph

The windiest month (with the highest average wind speed) is May (6.8mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).

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Average humidity in August
South Santa Rosa, CA

Average humidity in August - South Santa Rosa, CA
  • Average humidity in August: 67%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).

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Average rainfall in August
South Santa Rosa, CA

Average rainfall in August - South Santa Rosa, CA
  • Average rainfall in August: 0.04"

The wettest month (with the highest rainfall) is February (0.91").
The driest months (with the least rainfall) are June, July, August and September (0.04").

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Average rainfall days in August
South Santa Rosa, CA

Average rainfall days in August - South Santa Rosa, CA
  • Average rainfall days in August: 0.5 days

The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (0.5 days).

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Average daylight in August /
Average sunshine in August
South Santa Rosa, CA

Average daylight in August / Average sunshine in August - South Santa Rosa, 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: 11h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in August
South Santa Rosa, CA

Average sunshine days in August - South Santa Rosa, CA
  • Average sunshine days in August: 27.1 days

The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is March (20.8 days).

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Average UV index in August
South Santa Rosa, CA

Average UV index in August - South Santa Rosa, CA
  • Average UV index in August: 5

The month with the highest UV index is June (UV index 6).
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
South Santa Rosa, CA

Average cloud cover in August - South Santa Rosa, CA
  • Average cloud cover in August: 10

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in August
South Santa Rosa, CA

Average visibility in August - South Santa Rosa, 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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South Santa Rosa, California, USA

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