August weather forecastSouth El Monte, CA
August
Weather in August
The last month of the summer, August, is another hot month in South El Monte, California, with an average temperature ranging between max 87.6°F (30.9°C) and min 64.9°F (18.3°C).Temperature
August tends to be the warmest month, with temperatures averaging a daily high of 87.6°F (30.9°C) and a low of 64.9°F (18.3°C).Heat index
In August, the heat index is computed to be a hot 89.6°F (32°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.For clarity, heat index numbers account for light winds and areas under shade. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
The average relative humidity in August in South El Monte, California, is 50%.Rainfall
In South El Monte, in August, during 1.9 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. In South El Monte, California, during the entire year, the rain falls for 43.3 days and collects up to 5.91" (150mm) of precipitation.Daylight
In August, the average length of the day is 13h and 23min.On the first day of August in South El Monte, sunrise is at 6:04 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 South El Monte, California, the average sunshine in August is 12h.UV index
August is the month with the highest UV index in South El Monte, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 7 in August translates into this advice:
Deter overexposure. Protecting against the sun's effects is essential. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
South El Monte, CA
- Average high temperature in August: 87.6°F
The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is December (63.5°F).
- Average low temperature in August: 64.9°F
The month with the highest average low temperature is August (64.9°F).
The coldest months (with the lowest average low temperature) are February and December (47.3°F).
Average pressure in August
South El Monte, 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
South El Monte, CA
- Average wind speed in August: 4.6mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest months (with the lowest average wind speed) are September and October (4.5mph).
Average humidity in August
South El Monte, CA
- Average humidity in August: 50%
The month with the highest relative humidity is June (58%).
The month with the lowest relative humidity is November (46%).
Average rainfall in August
South El Monte, CA
- Average rainfall in August: 0.08"
The wettest month (with the highest rainfall) is December (1.22").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in August
South El Monte, CA
- Average rainfall days in August: 1.9 days
The month with the highest number of rainy days is March (5.3 days).
The month with the least rainy days is June (1.2 days).
Average daylight in August /
Average sunshine in August
South El Monte, CA
- Average daylight in August: 13h and 24min
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 month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in August
South El Monte, CA
- Average sunshine days in August: 26.8 days
The month with the most sunshine days is June (27.6 days).
The month with the least sunshine days is February (22.6 days).
Average UV index in August
South El Monte, 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
South El Monte, CA
- Average cloud cover in August: 5
The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in August
South El Monte, 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).





