Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
The high-temperature average in July for South San Francisco is a pleasant 68.9°F (20.5°C), staying closely aligned with June's conditions. In the month of July, South San Francisco records a consistent average low-temperature of 54.7°F (12.6°C).Humidity
In South San Francisco, the average relative humidity in July is 77%.Rainfall
June through August are months with the least rain when the rain falls for 1.9 days and typically aggregates up to 0.04" (1mm) of rain.Daylight
In South San Francisco, the average length of the day in July is 14h and 28min.On the first day of the month, sunrise is at 5:52 am and sunset at 8:35 pm. On the last day of July, sunrise is at 6:13 am and sunset at 8:18 pm PDT.
Sunshine
With an average of 11.7h of sunshine, July has the most sunshine of the year.UV index
June through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 5 during July leads to these instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in July?
What is the average humidity in July?
What is the driest month?
How much does it rain in South San Francisco in July?
What is the average length of the day in July?
What time are sunrise and sunset in July?
What month has the most sunshine?
How many hours of sunshine does South San Francisco have in July?
What are the months with the highest UV index?
What is the UV index reading in July?
Average temperature in July
South San Francisco, CA
- Average high temperature in July: 68.9°F
The warmest month (with the highest average high temperature) is September (70°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in July: 54.7°F
The months with the highest average low temperature are August and September (56.5°F).
The coldest months (with the lowest average low temperature) are January, February and December (47.8°F).
Average pressure in July
South San Francisco, CA
- Average pressure in July: 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 July
South San Francisco, CA
- Average wind speed in July: 6.5mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).
Average humidity in July
South San Francisco, CA
- Average humidity in July: 77%
The month with the highest relative humidity is August (78%).
The months with the lowest relative humidity are October and November (71%).
Average rainfall in July
South San Francisco, CA
- Average rainfall in July: 0.04"
The wettest month (with the highest rainfall) is February (0.79").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in July
South San Francisco, CA
- Average rainfall days in July: 1.9 days
The month with the highest number of rainy days is March (9.4 days).
The month with the least rainy days is June (1.1 days).
Average daylight in July /
Average sunshine in July
South San Francisco, CA
- Average daylight in July: 14h and 3min
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: 11h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in July
South San Francisco, CA
- Average sunshine days in July: 26.3 days
The months with the most sunshine days are June, July and September (26.3 days).
The month with the least sunshine days is March (19.4 days).
Average UV index in July
South San Francisco, CA
- Average UV index in July: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and December (UV index 3).
Average cloud cover in July
South San Francisco, CA
- Average cloud cover in July: 17
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is September (Cloud cover 16).
Average visibility in July
South San Francisco, 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).
South San Francisco, California, USA
Weather forecast for your location
2. Allow the app to use your location