July weather forecastLos Altos, CA
July
Weather in July
July, like June, in Los Altos, California, is a moderately hot summer month, with an average temperature varying between 79.7°F (26.5°C) and 55.2°F (12.9°C).Temperature
July, with its high-temperature average of 79.7°F (26.5°C) and a low-temperature average of 55.2°F (12.9°C), is the warmest month.Humidity
July, September and October, with an average relative humidity of 63%, are the least humid months in Los Altos.Rainfall
June through August are months with the least rain in Los Altos when the rain falls for 1.3 days and typically aggregates up to 0.04" (1mm) of rain.Daylight
The average length of the day in July is 14h and 26min.On the first day of the month, sunrise is at 5:51 am and sunset at 8:33 pm. On the last day of July, sunrise is at 6:12 am and sunset at 8:16 pm PDT.
Sunshine
The months with the most sunshine are July and August, with an average of 12h of sunshine.UV index
In July, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 5 during July translates into the following directions:
Take necessary precautions - Defending against sun damage is advocated. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Los Altos, CA
- Average high temperature in July: 79.7°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 July: 55.2°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 July
Los Altos, CA
- Average pressure in July: 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 July
Los Altos, CA
- Average wind speed in July: 4.9mph
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 July
Los Altos, CA
- Average humidity in July: 63%
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 July
Los Altos, CA
- Average rainfall in July: 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 July
Los Altos, CA
- Average rainfall days in July: 1.3 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 July /
Average sunshine in July
Los Altos, CA
- Average daylight in July: 14h and 24min
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 July: 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 July
Los Altos, CA
- Average sunshine days in July: 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 July
Los Altos, CA
- Average UV index in July: 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 July
Los Altos, CA
- Average cloud cover in July: 7
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 July
Los Altos, CA
- Average visibility in July: 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).
