July weather forecastPalo Alto, CA
July
Weather in July
July, like June, in Palo Alto, California, is another warm summer month, with an average temperature ranging between max 77.5°F (25.3°C) and min 55.4°F (13°C).Temperature
The months of July and August see the peak of Palo Alto's temperatures, averaging a high of 77.5°F (25.3°C).Humidity
In Palo Alto, the average relative humidity in July is 66%.Rainfall
The only month without rainfall is July.Daylight
In July, the average length of the day 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 8:17 pm PDT.
Sunshine
July has the most sunshine of the year, with an average of 12.1h of sunshine.UV index
The months with the highest UV index are April through October, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 5 in July leads to these guidelines:
Exercise care. People with light skin might get burns in fewer than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Palo Alto, CA
- Average high temperature in July: 77.5°F
The warmest months (with the highest average high temperature) are July and August (77.5°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in July: 55.4°F
The month with the highest average low temperature is August (57°F).
The coldest months (with the lowest average low temperature) are January and February (45.1°F).
Average pressure in July
Palo Alto, 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
Palo Alto, CA
- Average wind speed in July: 5.2mph
The windiest months (with the highest average wind speed) are April and May (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (4.9mph).
Average humidity in July
Palo Alto, CA
- Average humidity in July: 66%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (65%).
Average rainfall in July
Palo Alto, CA
- Average rainfall in July: 0"
The wettest month (with the highest rainfall) is February (2.01").
The driest month (with the least rainfall) is July (0").
Average rainfall days in July
Palo Alto, CA
- Average rainfall days in July: 0.8 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (0.6 days).
Average daylight in July /
Average sunshine in July
Palo Alto, 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 6min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in July
Palo Alto, CA
- Average sunshine days in July: 30.2 days
The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is March (18 days).
Average UV index in July
Palo Alto, CA
- Average UV index in July: 5
The months with the highest UV index are April, May, June, July, August, September and October (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in July
Palo Alto, CA
- Average cloud cover in July: 6
The months with the most cloud cover are March and December (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in July
Palo Alto, 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).
