August weather forecast
Diablo, CA

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Weather in August

The last month of the summer, August, is another warm month in Diablo, California, with an average temperature ranging between max 82.9°F (28.3°C) and min 56.7°F (13.7°C).

Temperature

During August, Diablo observes a subtle ascent to a still moderately hot 82.9°F (28.3°C) from July's 83.8°F (28.8°C) in the average high-temperature. Nighttime temperatures exhibit a substantial dip from daytime highs during August, averaging at a refreshing 56.7°F (13.7°C).

Heat index

August's average heat index is evaluated at a hot 86°F (30°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.
Data suggests that the heat index is set for environments in shade and with a light wind. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

The average relative humidity in August is 61%.

Rainfall

July and August are months without rainfall.

Daylight

The average length of the day in August is 13h and 35min.
On the first day of August, sunrise is at 6:11 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.

Sunshine

In August, the average sunshine is 11.9h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 during August translates into the following directions:
Guard oneself from overexposure. Defence against sun injury is vital. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.

Frequently asked questions

How hot does it get in August?

In Diablo, 82.9°F (28.3°C) is the average high-temperature and 56.7°F (13.7°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is evaluated at 86°F (30°C).

What is the average humidity in August?

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

What is the driest month?

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

Does it rain in August?

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

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

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

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:11 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 Diablo, the average sunshine duration in August is 11.9h.

When is the highest UV index in Diablo?

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
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
Diablo, CA

Average temperature in August - Diablo, 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).

Average pressure in August
Diablo, CA

Average pressure in August - Diablo, 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).

Average wind speed in August
Diablo, CA

Average wind speed in August - Diablo, 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).

Average humidity in August
Diablo, CA

Average humidity in August - Diablo, 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%).

Average rainfall in August
Diablo, CA

Average rainfall in August - Diablo, 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").

Average rainfall days in August
Diablo, CA

Average rainfall days in August - Diablo, 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).

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

Average daylight in August / Average sunshine in August - Diablo, 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).

Average sunshine days in August
Diablo, CA

Average sunshine days in August - Diablo, 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).

Average UV index in August
Diablo, CA

Average UV index in August - Diablo, 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).

Average cloud cover in August
Diablo, CA

Average cloud cover in August - Diablo, 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).

Average visibility in August
Diablo, CA

Average visibility in August - Diablo, 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).

Diablo, California, USA

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