August weather forecast and climate
Duarte, CA

Weather in August

The last month of the summer, August, is another tropical month in Duarte, California, with average temperature ranging between max 88.2°F (31.2°C) and min 64.8°F (18.2°C).

Temperature

The warmest month is August, with an average high-temperature of 88.2°F (31.2°C) and an average low-temperature of 64.8°F (18.2°C).

Heat index

In August, the average heat index is calculated to a hot 90.3°F (32.4°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. 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 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, clothing, 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 Duarte, the average relative humidity is 47%.

Rainfall

In Duarte, in August, it is raining for 1.9 days, with typically 0.12" (3mm) of accumulated precipitation. In Duarte, during the entire year, the rain falls for 50.9 days and collects up to 8.46" (215mm) of precipitation.

Daylight

The average length of the day is 13.4h.

Sunshine

The average sunshine in August is 12h.

UV index

Months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for average individuals.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the warmest month in Duarte?

The warmest month in Duarte, California, is August, with an average high-temperature of 88.2°F (31.2°C) and an average low-temperature of 64.8°F (18.2°C).

What is the temperature in August in Duarte?

The average high-temperature, in August, in Duarte, California, is 88.2°F (31.2°C), while the average low-temperature is 64.8°F (18.2°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, in August is calculated to 90.3°F (32.4°C).

What is the average humidity in August in Duarte?

The average relative humidity in August in Duarte, California, is 47%.

How many days does it rain in August in Duarte?

In Duarte, during August, the rain falls for 1.9 days and regularly aggregates up to 0.12" (3mm) of precipitation.

How many hours of daylight does Duarte have in August?

In August, the average length of the day in Duarte is 13.4h.

How long on average sun shines in August in Duarte?

The average sunshine in August in Duarte, California, is 12h.

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

Months with the highest UV index in Duarte, California, are June through September, with an average maximum UV index of 6.

What is the UV index intensity in August in Duarte?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.

Average temperature in August
Duarte, CA

Average temperature in August - Duarte, CA
  • Average high temperature in August: 88.2°F

The warmest month (with the highest average high temperature) is August (88.2°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in August: 64.8°F

The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is December (45.7°F).

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Average pressure in August
Duarte, CA

Average pressure in August - Duarte, CA
  • Average pressure in August: 29.89"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in August
Duarte, CA

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

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in August
Duarte, CA

Average humidity in August - Duarte, CA
  • Average humidity in August: 47%

Months with the highest relative humidity are March and May (56%).
The month with the lowest relative humidity is November (46%).

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Average rainfall in August
Duarte, CA

Average rainfall in August - Duarte, CA
  • Average rainfall in August: 0.12"

The wettest months (with the highest rainfall) are February and December (1.77").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in August
Duarte, CA

Average rainfall days in August - Duarte, CA
  • Average rainfall days in August: 1.9 days

The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.1 days).

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

Average daylight in August / Average sunshine in August - Duarte, CA
  • Average daylight in August: 13.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in August: 12h

The month with the most sunshine is July (Average sunshine: 12.1h).
Months with the least sunshine are January, February and December (Average sunshine: 6.9).

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Average sunshine days in August
Duarte, CA

Average sunshine days in August - Duarte, CA
  • Average sunshine days in August: 27.8 days

The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (21 days).

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Average UV index in August
Duarte, CA

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

Months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in August
Duarte, CA

Average cloud cover in August - Duarte, CA
  • Average cloud cover in August: 5

Months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in August
Duarte, CA

Average visibility in August - Duarte, 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).

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