August weather forecast
Danville, CA

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Magnificent hills surrounding Mt. Diablo State Park located in the Contra Costa County in Danville, California
Magnificent hills surrounding Mt. Diablo State Park located in the Contra Costa County in Danville, California

Weather in August

August, the last month of the summer in Danville, is also a moderately hot month, with an average temperature ranging between max 82.9°F (28.3°C) and min 56.7°F (13.7°C).

Temperature

The shift from July to August is characterized by an average high-temperature of a still moderately hot 82.9°F (28.3°C), not significantly different from the 83.8°F (28.8°C) of July. Throughout August nights, a significant departure from daytime temperatures, with an average low of 56.7°F (13.7°C), is recognized.

Heat index

For August, the heat index is computed to be a tropical 86°F (30°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
When assessing, remember that heat index measurements are for light winds and shaded spots. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

In Danville, the average relative humidity in August is 61%.

Rainfall

July and August are months without rainfall in Danville.

Daylight

The average length of the day in August in Danville is 13h and 35min.
On the first day of the month, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of August, sunrise is at 6:37 am and sunset at 7:38 pm PDT.

Sunshine

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

UV index

The months with the highest UV index in Danville, California, are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 6 during August translates into the following directions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

Is it hot in Danville during August?

In Danville, in August, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 56.7°F (13.7°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in August is computed to be 86°F (30°C).

What is the average humidity in August in Danville?

In August, the average relative humidity in Danville is 61%.

What is the driest month in Danville?

In Danville, rain does not fall in July and August.

Does it rain in Danville in August?

In Danville, in August, it doesn't rain. In September, it rains.

What is the average length of the day in August in Danville?

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

When are sunrise and sunset in August in Danville?

On the first day of August, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 7:38 pm PDT.

How long on average sun shines in August in Danville?

The average sunshine duration in August in Danville, California, is 11.9h.

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

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

What is the UV index reading in August in Danville?

In August, the average daily maximum UV index in Danville, California, is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Danville, CA

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

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (55.8°F).

  • Average low temperature in August: 56.7°F

The months with the highest average low temperature are August and September (56.7°F).
The coldest month (with the lowest average low temperature) is January (42.1°F).

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Average pressure in August
Danville, CA

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

The month with the highest atmospheric pressure is January (30.14"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
Danville, CA

Average wind speed in August - Danville, CA
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is May (6.9mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).

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Average humidity in August
Danville, CA

Average humidity in August - Danville, CA
  • Average humidity in August: 61%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (57%).

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Average rainfall in August
Danville, CA

Average rainfall in August - Danville, CA
  • Average rainfall in August: 0"

The wettest month (with the highest rainfall) is February (2.36").
The driest months (with the least rainfall) are July and August (0").

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Average rainfall days in August
Danville, CA

Average rainfall days in August - Danville, CA
  • Average rainfall days in August: 0.6 days

The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.6 days).

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

Average daylight in August / Average sunshine in August - Danville, CA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in August
Danville, CA

Average sunshine days in August - Danville, CA
  • Average sunshine days in August: 29.9 days

The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is March (17.6 days).

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Average UV index in August
Danville, CA

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

The months with the highest UV index are June, July and August (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
Danville, CA

Average cloud cover in August - Danville, CA
  • Average cloud cover in August: 8

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 6).

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Average visibility in August
Danville, CA

Average visibility in August - Danville, 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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Danville, California, USA

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