June weather forecastSan Quentin, CA
June
Weather in June
June, the first month of the summer in San Quentin, is a pleasant month, with an average temperature varying between 53.2°F (11.8°C) and 69.1°F (20.6°C).Temperature
San Quentin's average high-temperature in June sits at an agreeable 69.1°F (20.6°C), showing little difference from the previous month. San Quentin sees an average low-temperature of 53.2°F (11.8°C) during June.Humidity
In San Quentin, the average relative humidity in June is 73%.Rainfall
The months with the least rainfall are June through September Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.Daylight
June has the longest days of the year, with an average of 14h and 48min of daylight.On the first day of the month, sunrise is at 5:48 am and sunset at 8:27 pm. On the last day of June, sunrise is at 5:51 am and sunset at 8:36 pm PDT.
Sunshine
The average sunshine in June in San Quentin is 11.1h.UV index
April, 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 health risk from unsafe exposure to UV radiation for the ordinary person.Note: In June, a daily maximum UV index of 5 leads to the following instructions:
Take necessary precautions - Defending against sun damage is advocated. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
San Quentin, CA
- Average high temperature in June: 69.1°F
The warmest month (with the highest average high temperature) is September (72.3°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in June: 53.2°F
The month with the highest average low temperature is September (56.1°F).
The coldest month (with the lowest average low temperature) is December (45.3°F).
Average pressure in June
San Quentin, CA
- Average pressure in June: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in June
San Quentin, CA
- Average wind speed in June: 7.5mph
The windiest month (with the highest average wind speed) is May (7.8mph).
The calmest months (with the lowest average wind speed) are October and November (5.5mph).
Average humidity in June
San Quentin, CA
- Average humidity in June: 73%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (68%).
Average rainfall in June
San Quentin, CA
- Average rainfall in June: 0.04"
The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days in June
San Quentin, CA
- Average rainfall days in June: 1.2 days
The month with the highest number of rainy days is March (8.8 days).
The months with the least rainy days are June and August (1.2 days).
Average daylight in June /
Average sunshine in June
San Quentin, CA
- Average daylight in June: 14h and 48min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in June: 11h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in June
San Quentin, CA
- Average sunshine days in June: 26.4 days
The month with the most sunshine days is June (26.4 days).
The month with the least sunshine days is March (20.7 days).
Average UV index in June
San Quentin, CA
- Average UV index in June: 5
The months with the highest UV index are April, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in June
San Quentin, CA
- Average cloud cover in June: 22
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).
Average visibility in June
San Quentin, 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).





