August weather forecastLos Altos, CA
August
Weather in August
August, the last month of the summer in Los Altos, is another warm month, with an average temperature fluctuating between 56.8°F (13.8°C) and 79.3°F (26.3°C).Temperature
The shift into August finds Los Altos at an average high-temperature of a still moderately hot 79.3°F (26.3°C), closely comparable to July's conditions. Despite a significant deviation from daily highs, August sees an average nighttime temperature of 56.8°F (13.8°C).Humidity
The average relative humidity in August in Los Altos, California, is 65%.Rainfall
June through August are months with the least rain when the rain falls for 0.4 days and typically aggregates up to 0.04" (1mm) of rain.Daylight
The average length of the day in August in Los Altos is 13h and 33min.On the first day of August in Los Altos, sunrise is at 6:13 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:38 pm PDT.
Sunshine
July and August, with an average of 12h of sunshine, are months with the most sunshine in Los Altos.UV index
The average daily maximum UV index in August in Los Altos is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 5 during August translates into the following guidance:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Los Altos, CA
- Average high temperature in August: 79.3°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (56.5°F).
- Average low temperature in August: 56.8°F
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is December (44.1°F).
Average pressure in August
Los Altos, CA
- Average pressure in August: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June and September (29.92"Hg).
Average wind speed in August
Los Altos, CA
- Average wind speed in August: 4.7mph
The windiest months (with the highest average wind speed) are April and May (6.2mph).
The calmest months (with the lowest average wind speed) are August, September, October and November (4.7mph).
Average humidity in August
Los Altos, CA
- Average humidity in August: 65%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July, September and October (63%).
Average rainfall in August
Los Altos, CA
- Average rainfall in August: 0.04"
The wettest months (with the highest rainfall) are February, March and December (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in August
Los Altos, CA
- Average rainfall days in August: 0.4 days
The month with the highest number of rainy days is March (10 days).
The month with the least rainy days is August (0.4 days).
Average daylight in August /
Average sunshine in August
Los Altos, CA
- Average daylight in August: 13h and 36min
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
Los Altos, CA
- Average sunshine days in August: 29.8 days
The months with the most sunshine days are July and August (29.8 days).
The month with the least sunshine days is March (19.4 days).
Average UV index in August
Los Altos, 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 February, November and December (UV index 3).
Average cloud cover in August
Los Altos, 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
Los Altos, 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).
