June weather forecastSouth San Francisco, CA
June weather forecast for South San Francisco, California: The first month of the summer, June, is still a refreshing month in South San Francisco, California, with temperature in the range of an average high of 66.9°F (19.4°C) and an average low of 53.6°F (12°C). In South San Francisco, in June, during 1.1 rainfall days, 0.04" (1mm) of precipitation is typically accumulated.
June
Weather in June
The first month of the summer, June, is still a refreshing month in South San Francisco, California, with temperature in the range of an average high of 66.9°F (19.4°C) and an average low of 53.6°F (12°C).Temperature
During June, the average high-temperature is a still refreshing 66.9°F (19.4°C), maintaining a close resemblance to that of the preceding month. An average nighttime temperature of 53.6°F (12°C) is recorded during June.Humidity
The average relative humidity in June is 75%.Rainfall
June through August are months with the least rain when the rain falls for 1.1 days and typically aggregates up to 0.04" (1mm) of rain.Daylight
The month with the longest days is June, with an average of 14h and 42min of daylight.On the first day of the month, sunrise is at 5:49 am and sunset at 8:25 pm. On the last day of June, sunrise is at 5:51 am and sunset at 8:35 pm PDT.
Sunshine
In June, the average sunshine is 11.5h.UV index
June through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In June, the average maximum UV index of 5 translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. To protect against the Sun's most potent rays, avoid direct exposure around midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
South San Francisco, CA
- Average high temperature in June: 66.9°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 June: 53.6°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 June
South San Francisco, CA
- Average pressure in June: 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 June
South San Francisco, CA
- Average wind speed in June: 7.7mph
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 June
South San Francisco, CA
- Average humidity in June: 75%
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 June
South San Francisco, CA
- Average rainfall in June: 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 June
South San Francisco, CA
- Average rainfall days in June: 1.1 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 June /
Average sunshine in June
South San Francisco, CA
- Average daylight in June: 14h and 42min
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 June: 11h and 30min
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 June
South San Francisco, CA
- Average sunshine days in June: 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 June
South San Francisco, CA
- Average UV index in June: 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 June
South San Francisco, CA
- Average cloud cover in June: 19
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 June
South San Francisco, CA
- Average visibility in June: 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).
