Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
With average temperatures fluctuating between a high of 88.3°F (31.3°C) and a low of 66.2°F (19°C), August stands out as the warmest month.Heat index
In August, the heat index is calculated to be a tropical 91.4°F (33°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
In August, the average relative humidity is 51%.Rainfall
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.Daylight
In Rowland Heights, the average length of the day in August is 13h and 23min.On the first day of the month, sunrise is at 6:03 am and sunset at 7:52 pm. On the last day of August, sunrise is at 6:25 am and sunset at 7:18 pm PDT.
Sunshine
In August, the average sunshine 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 hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 7 in August translates into the following instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the hottest?
How hot is August?
What is the average humidity in August?
What is the driest month?
How many days does it rain in August?
What is the average length of the day in August in Rowland Heights?
When are sunrise and sunset in August?
How many hours of sunshine does Rowland Heights have in August?
When is the highest UV index?
What is the UV index intensity in August?
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).
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).
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).
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%).
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").
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).
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).
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).
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).
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).
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).
Rowland Heights, California, USA
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