Climate and monthly weather forecastSan Quentin, CA
Climate and monthly weather forecast
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 »Updated: Feb 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, in San Quentin, there are 48 rainfall days, and 3.94" (100mm) of precipitation is accumulated.
The months with the lowest UV index in San Quentin are January, February, November and December, with an average maximum UV index of 3.
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.
The most humid month in San Quentin, California, is March, with an average relative humidity of 77%.
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.
The months with the highest UV index in San Quentin, California, are April, June through September, with an average maximum UV index of 5.
The months with the least rainfall are June through September Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.
June has the longest days of the year in San Quentin, with an average of 14h and 48min of daylight.
With an average of 11.2h of sunshine, July has the most sunshine of the year.
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).
October is the least humid month, with an average relative humidity of 68%.
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.
The month with the shortest days in San Quentin is December, with an average of 9h and 36min of daylight.
The month with the least sunshine is December, with an average of 5.5h of sunshine.
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).
Average pressure
San Quentin, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.1"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
San Quentin, CA
- Average wind speed in January:
6mph - Average wind speed in February:
6.8mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.6mph - Average wind speed in May:
7.8mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.4mph - Average wind speed in September:
5.9mph - Average wind speed in October:
5.5mph - Average wind speed in November:
5.5mph - Average wind speed in December:
6.2mph
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
San Quentin, CA
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (68%).
Average rainfall
San Quentin, CA
- Average rainfall in January:
0.59" - Average rainfall in February:
0.87" - Average rainfall in March:
0.59" - Average rainfall in April:
0.2" - Average rainfall in May:
0.28" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.04" - Average rainfall in October:
0.12" - Average rainfall in November:
0.47" - Average rainfall in December:
0.67"
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
San Quentin, CA
- Average rainfall days in January:
5.9 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
8.8 days - Average rainfall days in April:
5.5 days - Average rainfall days in May:
3.3 days - Average rainfall days in June:
1.2 days
- Average rainfall days in July:
1.4 days - Average rainfall days in August:
1.2 days - Average rainfall days in September:
1.7 days - Average rainfall days in October:
2.6 days - Average rainfall days in November:
3.9 days - Average rainfall days in December:
7.2 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 / Average sunshine
San Quentin, CA
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 36min
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 January:
5h and 42min - Average sunshine in February:
6h and 6min - Average sunshine in March:
7h and 30min - Average sunshine in April:
10h and 0min - Average sunshine in May:
10h and 0min - Average sunshine in June:
11h and 6min
- Average sunshine in July:
11h and 12min - Average sunshine in August:
10h and 54min - Average sunshine in September:
10h and 24min - Average sunshine in October:
6h and 48min - Average sunshine in November:
6h and 18min - Average sunshine in December:
5h and 30min
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
San Quentin, CA
- Average sunshine days in January:
24.2 days - Average sunshine days in February:
21.4 days - Average sunshine days in March:
20.7 days - Average sunshine days in April:
23.3 days - Average sunshine days in May:
24.7 days - Average sunshine days in June:
26.4 days
- Average sunshine days in July:
26.3 days - Average sunshine days in August:
24.8 days - Average sunshine days in September:
26 days - Average sunshine days in October:
26.2 days - Average sunshine days in November:
24 days - Average sunshine days in December:
22.1 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
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).
Average cloud cover
San Quentin, CA
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
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).
