August weather forecast
Rowland Heights, CA

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Weather in August

The last month of the summer, August, is also a hot month in Rowland Heights, California, with an average temperature ranging between max 88.3°F (31.3°C) and min 66.2°F (19°C).

Temperature

Rowland Heights's warmest temperatures are experienced in August, with average high temperatures of 88.3°F (31.3°C) and lows of 66.2°F (19°C).

Heat index

The heat index in August is evaluated at a tropical 91.4°F (33°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

In Rowland Heights, the average relative humidity in August is 51%.

Rainfall

The months with the least rainfall are June and August Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.

Daylight

The average length of the day in August in Rowland Heights is 13h and 23min.
On the first day of August in Rowland Heights, sunrise is at 6:03 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:18 pm PDT.

Sunshine

In August, the average sunshine in Rowland Heights is 12h.

UV index

The month with the highest UV index is August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 7 in August translates into this advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What month is the hottest in Rowland Heights?

Rowland Heights's temperature records reveal August as the warmest month, marked by average highs of 88.3°F (31.3°C) and lows of 66.2°F (19°C).

How hot is August in Rowland Heights?

Rowland Heights in August has an average high-temperature of 88.3°F (31.3°C) and an average low-temperature of 66.2°F (19°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is evaluated at 91.4°F (33°C).

What is the average humidity in August in Rowland Heights?

In Rowland Heights, California, the average relative humidity in August is 51%.

What is the driest month in Rowland Heights?

June and August are months with the least rain when the rain falls for 1.2 days and typically aggregates up to 0.04" (1mm) of rain.

How much does it rain in Rowland Heights in August?

In Rowland Heights, during August, the rain falls for 1.2 days and regularly aggregates up to 0.04" (1mm) of precipitation.

What is the average length of the day in August in Rowland Heights?

The average day length in August in Rowland Heights, California, is 13h and 23min.

When is the sunrise / sunset in August in Rowland Heights?

In August, on the first day of the month, sunrise is at 6:03 am and sunset at 7:52 pm. On the last day of the month, in Rowland Heights, California, sunrise is at 6:25 am and sunset at 7:18 pm PDT.

How many hours of sunshine does Rowland Heights have in August?

In Rowland Heights, California, the average sunshine duration in August is 12h.

What is the month with the highest UV index in Rowland Heights?

August is the month with the highest UV index in Rowland Heights, California, with an average maximum UV index of 7.

What is the UV index reading in August in Rowland Heights?

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

Average temperature in August
Rowland Heights, CA

Average temperature in August - Rowland Heights, CA
  • Average high temperature in August: 88.3°F

The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is December (64.9°F).

  • Average low temperature in August: 66.2°F

The month with the highest average low temperature is August (66.2°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).

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Average pressure in August
Rowland Heights, CA

Average pressure in August - Rowland Heights, CA
  • Average pressure in August: 29.89"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in August
Rowland Heights, CA

Average wind speed in August - Rowland Heights, CA
  • Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).

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Average humidity in August
Rowland Heights, CA

Average humidity in August - Rowland Heights, CA
  • Average humidity in August: 51%

The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (46%).

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Average rainfall in August
Rowland Heights, CA

Average rainfall in August - Rowland Heights, CA
  • Average rainfall in August: 0.04"

The wettest month (with the highest rainfall) is December (1.61").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days in August
Rowland Heights, CA

Average rainfall days in August - Rowland Heights, CA
  • Average rainfall days in August: 1.2 days

The month with the highest number of rainy days is March (6.6 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
Rowland Heights, CA

Average daylight in August / Average sunshine in August - Rowland Heights, CA
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in August: 12h and 0min

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

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Average sunshine days in August
Rowland Heights, CA

Average sunshine days in August - Rowland Heights, CA
  • Average sunshine days in August: 28.2 days

The month with the most sunshine days is August (28.2 days).
The month with the least sunshine days is February (21.6 days).

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Average UV index in August
Rowland Heights, CA

Average UV index in August - Rowland Heights, CA
  • Average UV index in August: 7

The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in August
Rowland Heights, CA

Average cloud cover in August - Rowland Heights, CA
  • Average cloud cover in August: 5

The 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
Rowland Heights, CA

Average visibility in August - Rowland Heights, 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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Rowland Heights, California, USA

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