August weather forecastCupertino, CA
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Cupertino, California, with an average temperature ranging between min 56.1°F (13.4°C) and max 79.2°F (26.2°C).Temperature
The average high-temperature for August is a still warm 79.2°F (26.2°C), closely aligning with the temperature of the preceding month. In the face of high daytime temperatures, Cupertino witnesses a consistent average nighttime low of 56.1°F (13.4°C) during August.Humidity
In Cupertino, the average relative humidity in August is 66%.Rainfall
July and August are months with the least rain when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.Daylight
In Cupertino, the average length of the day in August is 13h and 33min.On the first day of the month, sunrise is at 6:13 am and sunset at 8:15 pm. On the last day of August, in Cupertino, California, sunrise is at 6:38 am and sunset at 7:37 pm PDT.
Sunshine
July and August, with an average of 12h of sunshine, are months with the most sunshine.UV index
In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 5 in August, converts into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Cupertino, CA
- Average high temperature in August: 79.2°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (57°F).
- Average low temperature in August: 56.1°F
The month with the highest average low temperature is August (56.1°F).
The coldest months (with the lowest average low temperature) are February and March (44.2°F).
Average pressure in August
Cupertino, CA
- Average pressure in August: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in August
Cupertino, CA
- Average wind speed in August: 4.7mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).
Average humidity in August
Cupertino, CA
- Average humidity in August: 66%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July, September and October (64%).
Average rainfall in August
Cupertino, CA
- Average rainfall in August: 0.04"
The wettest month (with the highest rainfall) is February (1.02").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in August
Cupertino, CA
- Average rainfall days in August: 0.8 days
The month with the highest number of rainy days is March (9 days).
The month with the least rainy days is August (0.8 days).
Average daylight in August /
Average sunshine in August
Cupertino, CA
- Average daylight in August: 13h and 30min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 12h and 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in August
Cupertino, CA
- Average sunshine days in August: 28.5 days
The month with the most sunshine days is August (28.5 days).
The months with the least sunshine days are February and March (20.8 days).
Average UV index in August
Cupertino, CA
- Average UV index in August: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in August
Cupertino, CA
- Average cloud cover in August: 8
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in August
Cupertino, 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).
