Climate and monthly weather forecast
San Quentin, CA

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Weather in January

January, like December, is another refreshing winter month in San Quentin, California, with an average temperature ranging between max 56.1°F (13.4°C) and min 45.5°F (7.5°C). In January, San Quentin notes an average high-temperature of a still mild 56.1°F (13.4°C), hardly different from the preceding month. Weather in January »

Weather in February

The last month of the winter, February, is another refreshing month in San Quentin, California, with an average temperature fluctuating between 57.9°F (14.4°C) and 45.9°F (7.7°C). The dawn of February sees an average high-temperature of a still moderate 57.9°F (14.4°C), subtly contrasting with January's 56.1°F (13.4°C). Weather in February »

Weather in March

March, the first month of the spring in San Quentin, is also a moderate month, with an average temperature varying between 46.9°F (8.3°C) and 59.4°F (15.2°C). The onset of March brings an average high-temperature of a still mild 59.4°F (15.2°C), nearly matching the February temperature. Weather in March »

Weather in April

April in San Quentin, California, is an enjoyable spring month, with temperature in the range of an average low of 48.6°F (9.2°C) and an average high of 62.8°F (17.1°C). San Quentin experiences a recorded average high-temperature of a comfortable 62.8°F (17.1°C) in April, closely aligned with March's 59.4°F (15.2°C). Weather in April »

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). The weather during May records an average high-temperature of a still refreshing 64.9°F (18.3°C), closely mirroring the preceding month. Weather in May »

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). 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. Weather in June »

Weather in July

July, the same as June, in San Quentin, California, is another pleasant summer month, with temperature in the range of an average low of 54.3°F (12.4°C) and an average high of 70.5°F (21.4°C). July's average high-temperature stands at a still pleasant 70.5°F (21.4°C), showing little deviation from June's 69.1°F (20.6°C). Weather in July »

Weather in August

August, the last month of the summer in San Quentin, is another pleasant month, with an average temperature varying between 71.2°F (21.8°C) and 55.4°F (13°C). The onset of August manifests an average high-temperature of a still pleasant 71.2°F (21.8°C), demonstrating a minor variation from the preceding month. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in San Quentin, California, with temperature in the range of an average low of 56.1°F (13.4°C) and an average high of 72.3°F (22.4°C). September registers as the month with the highest average temperatures, reaching 72.3°F (22.4°C) at its peak and 56.1°F (13.4°C) at the lowest. Weather in September »

Weather in October

October, the same as September, in San Quentin, California, is an agreeable autumn month, with an average temperature fluctuating between 54.3°F (12.4°C) and 68.9°F (20.5°C). San Quentin experiences a recorded average high-temperature of a still agreeable 68.9°F (20.5°C) in October, closely aligned with September's 72.3°F (22.4°C). Weather in October »

Weather in November

November, the last month of the autumn in San Quentin, is another comfortable month, with an average temperature varying between 61.5°F (16.4°C) and 49.6°F (9.8°C). The onset of November aligns with a soft reduction in the average high-temperature, gently falling from an agreeable 68.9°F (20.5°C) in October to an enjoyable 61.5°F (16.4°C). Weather in November »

Weather in December

The first month of the winter, December, is also a moderate month in San Quentin, California, with an average temperature varying between 45.3°F (7.4°C) and 55.4°F (13°C). The coldest period tends to be December, when average temperatures fluctuate between a high of 55.4°F (13°C) and a low of 45.3°F (7.4°C). Weather in December »
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Frequently asked questions

How many days does it rain in San Quentin?

Throughout the year, in San Quentin, there are 48 rainfall days, and 3.94" (100mm) of precipitation is accumulated.

What is the month with the lowest UV index in San Quentin?

The months with the lowest UV index in San Quentin are January, February, November and December, with an average maximum UV index of 3.

What is the wettest month in San Quentin?

The month with the most rainfall is February, when the rain falls for 5.3 days and typically aggregates up to 0.87" (22mm) of precipitation.

What is the most humid month in San Quentin?

The most humid month in San Quentin, California, is March, with an average relative humidity of 77%.

When is Daylight Saving Time (DST) in San Quentin?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in San Quentin, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

What are the months with the highest UV index in San Quentin?

The months with the highest UV index in San Quentin, California, are April, June through September, with an average maximum UV index of 5.

What is the driest month in San Quentin?

The months with the least rainfall are June through September Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.

When are the longest days in San Quentin?

June has the longest days of the year in San Quentin, with an average of 14h and 48min of daylight.

What month has the most sunshine in San Quentin?

With an average of 11.2h of sunshine, July has the most sunshine of the year.

What is the warmest month in San Quentin?

In San Quentin, September is the warmest month, with temperatures averaging a high of 72.3°F (22.4°C) and a low of 56.1°F (13.4°C).

What is the least humid month in San Quentin?

October is the least humid month, with an average relative humidity of 68%.

What is the coldest month in San Quentin?

December, with its high-temperature average of 55.4°F (13°C) and a low-temperature average of 45.3°F (7.4°C), is the coldest month.

What is the month with the shortest days in San Quentin?

The month with the shortest days in San Quentin is December, with an average of 9h and 36min of daylight.

What is the month with the least sunshine in San Quentin?

The month with the least sunshine is December, with an average of 5.5h of sunshine.

Average temperature
San Quentin, CA

Average temperature - San Quentin, CA

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).

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
San Quentin, CA

Average pressure - San Quentin, CA

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
San Quentin, CA

Average wind speed - San Quentin, CA

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 rainfall
San Quentin, CA

Average rainfall - San Quentin, CA

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
San Quentin, CA

Average rainfall days - San Quentin, CA

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 / Average sunshine
San Quentin, CA

Average daylight / Average sunshine - San Quentin, CA

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).

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
San Quentin, CA

Average sunshine days - San Quentin, CA

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
San Quentin, CA

Average UV index - San Quentin, CA

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 visibility
San Quentin, CA

Average visibility - San Quentin, CA

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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