August weather forecastWest Covina, CA
August
Weather in August
August welcomes citizens with temperatures moderately high, ranging from 88.9°F (31.6°C) to 64.9°F (18.3°C). Though the temperatures remain high, the city continues to enjoy clear skies with the least cloud cover. The consistent weather adds to the predictability of August's heat allowing residents to plan accordingly. With humidity levels on the decline, sun-soaked days become a highlight of August. The dominating summer weather prevails; however, a gradual cooling trend towards the end of August prepares West Covina for fall.Temperature
In West Covina, the highest average temperatures are observed in August, with a high of 88.9°F (31.6°C) and a low of 64.9°F (18.3°C).Heat index
For August, the heat index is calculated to be a hot 91.4°F (33°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.The metrics for the heat index are tailored for both shady environments and light winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
In August, the average relative humidity is 48%.Rainfall
In West Covina, in August, during 1.8 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. Throughout the year, there are 49.8 rainfall days, and 7.76" (197mm) of precipitation is accumulated.Snowfall
In West Covina, snow does not fall in January through November.Daylight
The average length of the day in August in West Covina is 13h and 23min.On the first day of August, 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 West Covina, California, the average sunshine in August is 12h.UV index
The month with the highest UV index in West Covina is August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index, 7 during August, leads to the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
West Covina, CA
- Average high temperature in August: 88.9°F
The warmest month (with the highest average high temperature) is August (88.9°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 month (with the lowest average low temperature) is December (47.3°F).
Average pressure in August
West Covina, 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
West Covina, CA
- Average wind speed in August: 4.6mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest months (with the lowest average wind speed) are September and October (4.5mph).
Average humidity in August
West Covina, CA
- Average humidity in August: 48%
The months with the highest relative humidity are May and June (57%).
The month with the lowest relative humidity is November (46%).
Average rainfall in August
West Covina, CA
- Average rainfall in August: 0.08"
The wettest month (with the highest rainfall) is December (1.73").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in August
West Covina, CA
- Average rainfall days in August: 1.8 days
The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is June (1.3 days).
Average snowfall days in August
West Covina, CA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in August /
Average sunshine in August
West Covina, 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 months with the least sunshine are February and December (Average sunshine: 6h and 54min).
Average sunshine days in August
West Covina, CA
- Average sunshine days in August: 27.2 days
The month with the most sunshine days is June (28 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in August
West Covina, 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
West Covina, 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
West Covina, 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).
