August weather forecast
Blackhawk, CA

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Weather in August

August, the last month of the summer in Blackhawk, is another warm month, with an average temperature ranging between min 55.9°F (13.3°C) and max 83.3°F (28.5°C).

Temperature

The beginning of August reveals an average high-temperature of a still warm 83.3°F (28.5°C), showing minimal deviation from the previous month. Blackhawk's temperature exhibits a stark contrast from daytime to nighttime, averaging lows of 55.9°F (13.3°C) in August.

Heat index

Throughout August, the heat index is calculated to be a tropical 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.

Humidity

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

Rainfall

January through June, August through December are months with rainfall in Blackhawk. August is the first month it rains. Throughout August, in the average 0.6 rainfall days, it receives 0.04" (1mm) of precipitation. In Blackhawk, during the entire year, the rain falls for 67.2 days and collects up to 10.98" (279mm) of precipitation.

Daylight

In August, the average length of the day is 13h and 35min.
On the first day of the month, sunrise is at 6:11 am and sunset at 8:16 pm. On the last day of August, in Blackhawk, sunrise is at 6:37 am and sunset at 7:37 pm PDT.

Sunshine

The average sunshine in August is 11.9h.

UV index

The months with the highest UV index in Blackhawk are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In August, the average maximum UV index of 6 translates into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
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Frequently asked questions

How hot is August in Blackhawk?

The average high-temperature, in August, in Blackhawk, is 83.3°F (28.5°C), while the average low-temperature is 55.9°F (13.3°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 86°F (30°C).

What is the average humidity in August in Blackhawk?

The average relative humidity in August in Blackhawk is 61%.

When does it start to rain in Blackhawk?

August is the first month it rains in Blackhawk. Throughout August, in the average 0.6 rainfall days, it receives 0.04" (1mm) of precipitation.

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

The average day length in August in Blackhawk, California, is 13h and 35min.

What time are sunrise and sunset in August in Blackhawk?

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, in Blackhawk, sunrise is at 6:37 am and sunset at 7:37 pm PDT.

How many hours of sunshine does Blackhawk have in August?

In August, the average sunshine duration in Blackhawk is 11.9h.

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

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

What is the UV index intensity in August in Blackhawk?

In August, the average daily maximum UV index in Blackhawk, California, is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to 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
Blackhawk, CA

Average temperature in August - Blackhawk, CA
  • Average high temperature in August: 83.3°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is December (55.9°F).

  • Average low temperature in August: 55.9°F

The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is December (42.1°F).

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Average pressure in August
Blackhawk, CA

Average pressure in August - Blackhawk, 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
Blackhawk, CA

Average wind speed in August - Blackhawk, CA
  • Average wind speed in August: 5.8mph

The windiest month (with the highest average wind speed) is May (6.7mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).

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Average humidity in August
Blackhawk, CA

Average humidity in August - Blackhawk, 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
Blackhawk, CA

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

The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0").

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Average rainfall days in August
Blackhawk, CA

Average rainfall days in August - Blackhawk, 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
Blackhawk, CA

Average daylight in August / Average sunshine in August - Blackhawk, 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
Blackhawk, CA

Average sunshine days in August - Blackhawk, CA
  • Average sunshine days in August: 29.8 days

The month with the most sunshine days is July (29.9 days).
The month with the least sunshine days is March (17.5 days).

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Average UV index in August
Blackhawk, CA

Average UV index in August - Blackhawk, 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
Blackhawk, CA

Average cloud cover in August - Blackhawk, 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
Blackhawk, CA

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

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