Monthly weather forecast and climate
San Leandro, CA

Weather in January

January, like December, is another mild winter month in San Leandro, California, with average temperature ranging between max 56.8°F (13.8°C) and min 44.1°F (6.7°C). In San Leandro, the average high-temperature is practically the same as in December - a still moderate 56.8°F (13.8°C). Weather in January »

Weather in February

February, the last month of the winter, in San Leandro, is also a moderate month, with temperature in the range of an average high of 58.8°F (14.9°C) and an average low of 44.2°F (6.8°C). In February, the average high-temperature is almost the same as in January - a still moderate 58.8°F (14.9°C). Weather in February »

Weather in March

March, the first month of the spring, in San Leandro, is a comfortable month, with average temperature ranging between max 61.3°F (16.3°C) and min 45.1°F (7.3°C). In March, the average high-temperature is almost the same as in February - an enjoyable 61.3°F (16.3°C). Weather in March »

Weather in April

April, like March, in San Leandro, California, is another enjoyable spring month, with average temperature fluctuating between 65.3°F (18.5°C) and 46.9°F (8.3°C). In San Leandro, California, the average high-temperature in April is practically the same as in March - a still enjoyable 65.3°F (18.5°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in San Leandro, California, with average temperature ranging between max 68.9°F (20.5°C) and min 49.6°F (9.8°C). In May, the average high-temperature is almost the same as in April - an agreeable 68.9°F (20.5°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in San Leandro, California, with average temperature varying between 75°F (23.9°C) and 53.4°F (11.9°C). In June, the average high-temperature slightly increases, from a pleasant 68.9°F (20.5°C) in May, to a moderately hot 75°F (23.9°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in San Leandro, California, with temperature in the range of an average low of 54.9°F (12.7°C) and an average high of 77.7°F (25.4°C). The warmest months are July and September, with an average high-temperature of 77.7°F (25.4°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in San Leandro, California, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 55.9°F (13.3°C). In August, the average high-temperature is relatively the same as in July - a still moderately hot 77.5°F (25.3°C). Weather in August »

Weather in September

September, the first month of the autumn, in San Leandro, is still a warm month, with average temperature fluctuating between 56.5°F (13.6°C) and 77.7°F (25.4°C). July and September, with an average high-temperature of 77.7°F (25.4°C), are the warmest months. Weather in September »

Weather in October

October, like September, is an agreeable autumn month in San Leandro, California, with temperature in the range of an average low of 54°F (12.2°C) and an average high of 71.4°F (21.9°C). In San Leandro, the average high-temperature marginally drops, from a moderately hot 77.7°F (25.4°C) in September, to a pleasant 71.4°F (21.9°C). Weather in October »

Weather in November

November, the last month of the autumn, in San Leandro, is another comfortable month, with average temperature varying between 48.4°F (9.1°C) and 63.1°F (17.3°C). In November, the average high-temperature marginally drops, from an agreeable 71.4°F (21.9°C) in October, to an enjoyable 63.1°F (17.3°C). Weather in November »

Weather in December

December, the first month of the winter, in San Leandro, is also a moderate month, with average temperature ranging between min 44.4°F (6.9°C) and max 55.8°F (13.2°C). With an average high-temperature of 55.8°F (13.2°C) and an average low-temperature of 44.4°F (6.9°C), December is the coldest month. Weather in December »
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FAQ

How much does it rain in San Leandro?

Throughout the year, there are 57.7 rainfall days, and 5.71" (145mm) of precipitation is accumulated.

When is the lowest UV index in San Leandro?

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

What is the wettest month in San Leandro?

February is the month with the most rainfall in San Leandro, California. Rain falls for 6.3 days and accumulates 1.26" (32mm) of precipitation.

What is the most humid month in San Leandro?

With an average relative humidity of 75%, March is the most humid month.

When are the longest days in San Leandro?

With an average of 14.7h of daylight, June has the longest days of the year in San Leandro, California.

When is the highest UV index in San Leandro?

June is the month with the highest UV index in San Leandro, California, with an average maximum UV index of 6.

What are the warmest months in San Leandro?

Warmest months in San Leandro, California, are July and September, with an average high-temperature of 77.7°F (25.4°C).

What is the driest month in San Leandro?

July through September are months with the least rain in San Leandro, California, when the rain falls for 1.3 days and typically aggregates up to 0.04" (1mm) of rain.

What month has the most sunshine in San Leandro?

July has the most sunshine of the year in San Leandro, California, with an average of 12h of sunshine.

What are the least humid months in San Leandro?

September and October, with an average relative humidity of 64%, are the least humid months in San Leandro.

What is the coldest month in San Leandro?

The coldest month in San Leandro is December, with an average high-temperature of 55.8°F (13.2°C) and an average low-temperature of 44.4°F (6.9°C).

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

December has the shortest days of the year in San Leandro, California, with an average of 9.6h of daylight.

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

The month with the least sunshine in San Leandro is December, with an average of 5.9h of sunshine.

Average temperature
San Leandro, CA

Average temperature - San Leandro, CA

The warmest months (with the highest average high temperature) are July and September (77.7°F).
The month with the lowest average high temperature is December (55.8°F).

The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is January (44.1°F).

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Average pressure
San Leandro, CA

Average pressure - San Leandro, CA

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed
San Leandro, CA

Average wind speed - San Leandro, CA

The windiest month (with the highest average wind speed) is May (7mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).

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Average humidity
San Leandro, CA

Average humidity - San Leandro, CA

The month with the highest relative humidity is March (75%).
Months with the lowest relative humidity are September and October (64%).

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Average rainfall
San Leandro, CA

Average rainfall - San Leandro, CA

The wettest month (with the highest rainfall) is February (1.26").
The driest months (with the least rainfall) are July, August and September (0.04").

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Average rainfall days
San Leandro, CA

Average rainfall days - San Leandro, CA

The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.7 days).

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Average daylight / Average sunshine
San Leandro, CA

Average daylight / Average sunshine - San Leandro, CA

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days
San Leandro, CA

Average sunshine days - San Leandro, CA

The month with the most sunshine days is July (27.1 days).
The month with the least sunshine days is March (19.1 days).

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Average UV index
San Leandro, CA

Average UV index - San Leandro, CA

The month with the highest UV index is June (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average visibility
San Leandro, CA

Average visibility - San Leandro, CA

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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