Climate and monthly weather forecast
San Joaquin, CA

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Weather in January

January, like December, is another mild winter month in San Joaquin, California, with an average temperature ranging between min 43.7°F (6.5°C) and max 59°F (15°C). San Joaquin's weather, upon January's arrival, documents an average high-temperature of a still refreshing 59°F (15°C), nearly identical to the prior month. Weather in January »

Weather in February

The last month of the winter, February, is an enjoyable month in San Joaquin, California, with an average temperature ranging between max 61.9°F (16.6°C) and min 44.2°F (6.8°C). San Joaquin observes an average high-temperature of a still refreshing 61.9°F (16.6°C) in February, barely different from 59°F (15°C) in January. Weather in February »

Weather in March

March, the first month of the spring in San Joaquin, is still a comfortable month, with an average temperature ranging between max 67.3°F (19.6°C) and min 47.5°F (8.6°C). The shift into March brings a slight increase in the average high-temperature, moving from 61.9°F (16.6°C) in February to a still refreshing 67.3°F (19.6°C). Weather in March »

Weather in April

April is a warm spring month in San Joaquin, California, with an average temperature ranging between min 51.4°F (10.8°C) and max 73.9°F (23.3°C). In San Joaquin, the onset of April comes with a modest high-temperature shift, transitioning from March's comfortable 67.3°F (19.6°C) to a warm 73.9°F (23.3°C). Weather in April »

Weather in May

May, the last month of the spring in San Joaquin, is also a moderately hot month, with an average temperature fluctuating between 56.7°F (13.7°C) and 82°F (27.8°C). The arrival of May signals a slight increase in the average high-temperature, moving from a moderately hot 73.9°F (23.3°C) in April to a still warm 82°F (27.8°C). Weather in May »

Weather in June

June, the first month of the summer in San Joaquin, is a tropical month, with an average temperature varying between 93.6°F (34.2°C) and 63.1°F (17.3°C). San Joaquin experiences a temperature shift with the start of June, with average high-temperatures moving from a moderately hot 82°F (27.8°C) in May to a tropical 93.6°F (34.2°C). Weather in June »

Weather in July

July is a torrid summer month in San Joaquin, California, with an average temperature fluctuating between 100.9°F (38.3°C) and 67.1°F (19.5°C). In San Joaquin, the average temperatures in July are the highest, with a peak at 100.9°F (38.3°C) and a low of 67.1°F (19.5°C). Weather in July »

Weather in August

The last month of the summer, August, is another torrid month in San Joaquin, California, with an average temperature varying between 99.9°F (37.7°C) and 66.6°F (19.2°C). August's average high-temperature is a still fiery hot 99.9°F (37.7°C), maintaining a close comparison with July's 100.9°F (38.3°C). Weather in August »

Weather in September

September, the first month of the autumn in San Joaquin, is still a hot month, with an average temperature varying between 63.5°F (17.5°C) and 92.7°F (33.7°C). The advent of September brings a slight shift in average high-temperature, moving from a very hot 99.9°F (37.7°C) in August to a tropical 92.7°F (33.7°C). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in San Joaquin, California, with an average temperature ranging between min 56.8°F (13.8°C) and max 79.7°F (26.5°C). In the transition to October, San Joaquin observes a drop in the average high-temperature, moving from a tropical 92.7°F (33.7°C) in September to a moderately hot 79.7°F (26.5°C). Weather in October »

Weather in November

November, the last month of the autumn in San Joaquin, is another comfortable month, with an average temperature varying between 66.7°F (19.3°C) and 48.4°F (9.1°C). During San Joaquin's transition into November, the average high-temperature lessens, moving from a warm 79.7°F (26.5°C) in October to a comfortable 66.7°F (19.3°C). Weather in November »

Weather in December

The first month of the winter, December, is still a refreshing month in San Joaquin, California, with an average temperature ranging between max 56.5°F (13.6°C) and min 42.6°F (5.9°C). San Joaquin experiences its lowest temperatures in December, with an average peak of 56.5°F (13.6°C) and a low of 42.6°F (5.9°C). Weather in December »
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the most humid month?

The months with the highest humidity are January and December, with an average relative humidity of 66%.

How much does it rain?

Throughout the year, there are 37.2 rainfall days, and 2.48" (63mm) of precipitation is accumulated.

What are the months with the lowest UV index?

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

What is the wettest month?

The months with the most rainfall are February and March, with an average 0.43" (11mm) of precipitation.

What is the month with the least sunshine?

The months with the least sunshine are February and December, with an average of 6.4h of sunshine.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 is the driest month?

June through September are months with the least rain when the rain falls for 0.6 days and typically aggregates up to 0.04" (1mm) of rain.

When are the longest days?

June has the longest days of the year, with an average of 14h and 36min of daylight.

What are the months with the highest UV index?

June through August, with an average maximum UV index of 7, are months with the highest UV index.

What month is the hottest?

In San Joaquin, July records the average highest temperatures, peaking at 100.9°F (38.3°C) and reaching a low of 67.1°F (19.5°C).

What is the least humid month?

The least humid month is July, with an average relative humidity of 30%.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 12.2h of sunshine.

What is the coldest month?

San Joaquin's coldest weather arrives in December, when temperatures average a high of 56.5°F (13.6°C) and a low of 42.6°F (5.9°C).

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

The month with the shortest days is December, with an average of 9h and 42min of daylight.

Average temperature
San Joaquin, CA

Average temperature - San Joaquin, CA

The warmest month (with the highest average high temperature) is July (100.9°F).
The month with the lowest average high temperature is December (56.5°F).

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is December (42.6°F).

Average pressure
San Joaquin, CA

Average pressure - San Joaquin, CA

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed
San Joaquin, CA

Average wind speed - San Joaquin, CA

The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest month (with the lowest average wind speed) is January (5.1mph).

Average humidity
San Joaquin, CA

Average humidity - San Joaquin, CA

The months with the highest relative humidity are January and December (66%).
The month with the lowest relative humidity is July (30%).

Average rainfall
San Joaquin, CA

Average rainfall - San Joaquin, CA

The wettest months (with the highest rainfall) are February and March (0.43").
The driest months (with the least rainfall) are June, July, August and September (0.04").

Average rainfall days
San Joaquin, CA

Average rainfall days - San Joaquin, CA

The month with the highest number of rainy days is March (7 days).
The months with the least rainy days are August and September (0.5 days).

Average daylight / Average sunshine
San Joaquin, CA

Average daylight / Average sunshine - San Joaquin, CA

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The months with the least sunshine are February and December (Average sunshine: 6h and 24min).

Average sunshine days
San Joaquin, CA

Average sunshine days - San Joaquin, CA

The month with the most sunshine days is August (29.7 days).
The month with the least sunshine days is February (22 days).

Average UV index
San Joaquin, CA

Average UV index - San Joaquin, CA

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).

Average visibility
San Joaquin, CA

Average visibility - San Joaquin, 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).

San Joaquin, California, USA

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