May weather forecast
San Quentin, CA

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Weather in May

The last month of the spring, May, is also an enjoyable month in San Quentin, California, with an average temperature ranging between max 64.9°F (18.3°C) and min 50.4°F (10.2°C).

Temperature

The weather during May records an average high-temperature of a still refreshing 64.9°F (18.3°C), closely mirroring the preceding month. San Quentin witnesses an average low-temperature of 50.4°F (10.2°C) throughout the month of May.

Humidity

In San Quentin, California, the average relative humidity in May is 75%.

Rainfall

In San Quentin, California, in May, during 3.3 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In San Quentin, California, during the entire year, the rain falls for 48 days and collects up to 3.94" (100mm) of precipitation.

Daylight

The average length of the day in May is 14h and 14min.
On the first day of May in San Quentin, sunrise is at 6:12 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:26 pm PDT.

Sunshine

In San Quentin, California, the average sunshine in May is 10h.

UV index

The average daily maximum UV index in May in San Quentin is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 4 in May translates into the following instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

What are May temperatures in San Quentin?

In San Quentin, in May, the average high-temperature is 64.9°F (18.3°C), and the average low-temperature is 50.4°F (10.2°C).

What is the average humidity in May in San Quentin?

The average relative humidity in May in San Quentin is 75%.

How much does it rain in San Quentin in May?

In San Quentin, California, in May, it is raining for 3.3 days, with typically 0.28" (7mm) of accumulated precipitation.

What is the average length of the day in May in San Quentin?

The average day length in May in San Quentin is 14h and 14min.

When is the sunrise / sunset in May in San Quentin?

On the first day of May in San Quentin, sunrise is at 6:12 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:26 pm PDT.

How many hours of sunshine does San Quentin have in May?

In May, the average sunshine duration in San Quentin is 10h.

What is the UV index reading in May in San Quentin?

The average daily maximum UV index in May in San Quentin is 4. A UV Index reading of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
San Quentin, CA

Average temperature in May - San Quentin, CA
  • Average high temperature in May: 64.9°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 May: 50.4°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).

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Average pressure in May
San Quentin, CA

Average pressure in May - San Quentin, CA
  • Average pressure in May: 29.98"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).

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Average wind speed in May
San Quentin, CA

Average wind speed in May - San Quentin, CA
  • Average wind speed in May: 7.8mph

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).

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Average humidity in May
San Quentin, CA

Average humidity in May - San Quentin, CA
  • Average humidity in May: 75%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in May
San Quentin, CA

Average rainfall in May - San Quentin, CA
  • Average rainfall in May: 0.28"

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").

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Average rainfall days in May
San Quentin, CA

Average rainfall days in May - San Quentin, CA
  • Average rainfall days in May: 3.3 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).

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Average daylight in May /
Average sunshine in May
San Quentin, CA

Average daylight in May / Average sunshine in May - San Quentin, CA
  • Average daylight in May: 14h and 1min

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 May: 10h and 0min

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).

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Average sunshine days in May
San Quentin, CA

Average sunshine days in May - San Quentin, CA
  • Average sunshine days in May: 24.7 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).

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Average UV index in May
San Quentin, CA

Average UV index in May - San Quentin, CA
  • Average UV index in May: 4

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).

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Average cloud cover in May
San Quentin, CA

Average cloud cover in May - San Quentin, CA
  • Average cloud cover in May: 31

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).

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Average visibility in May
San Quentin, CA

Average visibility in May - San Quentin, CA
  • Average visibility in May: 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).

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San Quentin, California, USA

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