August weather forecast and climate
Healdsburg, CA

Neat rows of plants in a farm with a view of a red farmhouse up the hill in Healdsburg, California
Neat rows of plants in a farm with a view of a red farmhouse up the hill in Healdsburg, California

Weather in August

The last month of the summer, August, is also a moderately hot month in Healdsburg, California, with average temperature fluctuating between 84.6°F (29.2°C) and 55°F (12.8°C).

Temperature

In Healdsburg, the average high-temperature is almost the same as in July - a still warm 84.6°F (29.2°C). In August, in Healdsburg, California, the average low-temperature is 55°F (12.8°C).

Heat index

The average heat index in August is appraised at a tropical 88.5°F (31.4°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, wind, metabolic differences), and activity. 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 particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Healdsburg, the average relative humidity is 60%.

Rainfall

Months with the least rainfall are July and August Rain falls for 0.8 days and accumulates 0.04" (1mm) of rain.

Snowfall

In Healdsburg, California, snow does not fall in January, March through December.

Daylight

In Healdsburg, the average length of the day is 13.6h.

Sunshine

In Healdsburg, the average sunshine in August is 11.9h.

UV index

Months with the highest UV index in Healdsburg are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 6 in August transform into the following instructions:
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.
[Resources]

FAQ

What is the temperature in August in Healdsburg?

In August, in Healdsburg, California, the average high-temperature is 84.6°F (29.2°C), and the average low-temperature is 55°F (12.8°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that combines both air temperature and relative humidity, is evaluated at 88.5°F (31.4°C).

What is the average humidity in August in Healdsburg?

The average relative humidity in August in Healdsburg is 60%.

How many days does it rain in August in Healdsburg?

In August, the rain falls for 0.8 days. Throughout August, 0.04" (1mm) of precipitation is accumulated.

What is the driest month in Healdsburg?

Months with the least rainfall in Healdsburg, California, are July and August Rain falls for 0.8 days and accumulates 0.04" (1mm) of rain.

When it does not snow in Healdsburg?

In Healdsburg, California, snow does not fall in January, March through December.

How many hours of daylight does Healdsburg have in August?

In August, the average length of the day is 13.6h.

How long on average sun shines in August in Healdsburg?

In August, the average sunshine in Healdsburg is 11.9h.

What are the months with the highest UV index in Healdsburg?

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

What is the UV index intensity in August in Healdsburg?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV radiation.

Average temperature in August
Healdsburg, CA

Average temperature in August - Healdsburg, CA
  • Average high temperature in August: 84.6°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in August: 55°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).

[Resources]

Average pressure in August
Healdsburg, CA

Average pressure in August - Healdsburg, 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").

[Resources]

Average wind speed in August
Healdsburg, CA

Average wind speed in August - Healdsburg, CA
  • Average wind speed in August: 4.6mph

The windiest months (with the highest average wind speed) are April and May (6.2mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).

[Resources]

Average humidity in August
Healdsburg, CA

Average humidity in August - Healdsburg, CA
  • Average humidity in August: 60%

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (57%).

[Resources]

Average rainfall in August
Healdsburg, CA

Average rainfall in August - Healdsburg, CA
  • Average rainfall in August: 0.04"

The wettest month (with the highest rainfall) is February (4.33").
The driest months (with the least rainfall) are July and August (0.04").

[Resources]

Average rainfall days in August
Healdsburg, CA

Average rainfall days in August - Healdsburg, CA
  • Average rainfall days in August: 0.8 days

The month with the highest number of rainy days is March (14.2 days).
The month with the least rainy days is August (0.8 days).

[Resources]

Average snowfall in August
Healdsburg, CA

Average snowfall in August - Healdsburg, CA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.04").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

[Resources]

Average snowfall days in August
Healdsburg, CA

Average snowfall days in August - Healdsburg, CA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (0.1 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

[Resources]

Average daylight in August /
Average sunshine in August
Healdsburg, CA

Average daylight in August / Average sunshine in August - Healdsburg, 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: 9.5h).

  • Average sunshine in August: 11.9h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.6h).

[Resources]

Average sunshine days in August
Healdsburg, CA

Average sunshine days in August - Healdsburg, CA
  • Average sunshine days in August: 29.4 days

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (14.8 days).

[Resources]

Average UV index in August
Healdsburg, CA

Average UV index in August - Healdsburg, CA
  • Average UV index in August: 6

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

[Resources]

Average cloud cover in August
Healdsburg, CA

Average cloud cover in August - Healdsburg, CA
  • Average cloud cover in August: 6

The month with the most cloud cover is March (Cloud cover 41).
Months with the least cloud cover are July and August (Cloud cover 6).

[Resources]

Average visibility in August
Healdsburg, CA

Average visibility in August - Healdsburg, 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).

[Resources]