San Ramon
California, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
San Ramon, CA

A street in San Ramon, California, featuring a stunning beauty of golden and brown trees on both sides of the road, during autumn, far mountains view
A street in San Ramon, California, featuring a stunning beauty of golden and brown trees on both sides of the road, during autumn, far mountains view
January, like December, is a moderate winter month in San Ramon, California, with average temperature fluctuating between 36°F (2.2°C) and 57.9°F (14.4°C). January is the coldest month, with an average high-temperature of 57.9°F (14.4°C) and an average low-temperature of 36°F (2.2°C). Weather in January »
February, the last month of the winter, in San Ramon, is a comfortable month, with average temperature varying between 61°F (16.1°C) and 39.9°F (4.4°C). In February, the average high-temperature is relatively the same as in January - an enjoyable 61°F (16.1°C). Weather in February »

The first month of the spring, March, is still a comfortable month in San Ramon, California, with average temperature fluctuating between 43°F (6.1°C) and 66°F (18.9°C). In March, the average high-temperature is practically the same as in February - a still enjoyable 66°F (18.9°C). Weather in March »

April is an agreeable spring month in San Ramon, California, with average temperature ranging between min 45°F (7.2°C) and max 70°F (21.1°C). In April, the average high-temperature is practically the same as in March - an agreeable 70°F (21.1°C). Weather in April »

The last month of the spring, May, is a moderately hot month in San Ramon, California, with average temperature varying between 48.9°F (9.4°C) and 77°F (25°C). In San Ramon, the average high-temperature marginally rises, from a pleasant 70°F (21.1°C) in April, to a moderately hot 77°F (25°C). Weather in May »

June, the first month of the summer, in San Ramon, is also a moderately hot month, with average temperature varying between 53.1°F (11.7°C) and 84°F (28.9°C). In June, the average high-temperature slightly increases, from a warm 77°F (25°C) in May, to a still moderately hot 84°F (28.9°C). Weather in June »

July in San Ramon, California, is a hot summer month, with average temperature fluctuating between 89.1°F (31.7°C) and 55.9°F (13.3°C). July and August, with an average high-temperature of 89.1°F (31.7°C), are the warmest months. Weather in July »

August, the last month of the summer, in San Ramon, is another tropical month, with average temperature fluctuating between 89.1°F (31.7°C) and 55.9°F (13.3°C). July and August, with an average high-temperature of 89.1°F (31.7°C), are the warmest months. Weather in August »

The first month of the autumn, September, is also a hot month in San Ramon, California, with average temperature fluctuating between 87.1°F (30.6°C) and 54°F (12.2°C). In San Ramon, the average high-temperature is almost the same as in August - a still tropical 87.1°F (30.6°C). Weather in September »

October, the same as September, is a moderately hot autumn month in San Ramon, California, with temperature in the range of an average high of 78.1°F (25.6°C) and an average low of 48.9°F (9.4°C). In San Ramon, California, the average high-temperature decreases, from a hot 87.1°F (30.6°C) in September, to a warm 78.1°F (25.6°C). Weather in October »

November, the last month of the autumn, in San Ramon, is also an enjoyable month, with average temperature ranging between min 42.1°F (5.6°C) and max 66°F (18.9°C). In November, the average high-temperature decreases, from a moderately hot 78.1°F (25.6°C) in October, to an enjoyable 66°F (18.9°C). Weather in November »

The first month of the winter, December, is still a mild month in San Ramon, California, with average temperature varying between 37.9°F (3.3°C) and 59°F (15°C). In San Ramon, the average high-temperature slightly decreases, from an enjoyable 66°F (18.9°C) in November, to a mild 59°F (15°C). Weather in December »

What is the coldest month in San Ramon?

With an average high-temperature of 57.9°F (14.4°C) and an average low-temperature of 36°F (2.2°C), January is the coldest month in San Ramon.

How much does it rain in San Ramon?

During the entire year, San Ramon aggregates up to 25.9" (657.8mm) of precipitation.

What is the rainiest month in San Ramon?

The month with the most rainfall in San Ramon is January when 5.2" (132.1mm) of precipitation is typically aggregated.

When are the longest days in San Ramon?

With an average of 14.8h of daylight, June has the longest days of the year in San Ramon.

What is the warmest month in San Ramon?

July and August, with an average high-temperature of 89.1°F (31.7°C), are warmest months.

What is the driest month in San Ramon?

July is the month with the least rainfall in San Ramon, California, with 0.1" (1.5mm) of accumulated precipitation.

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

December has the shortest days of the year, with an average of 9.6h of daylight.
Average rainfall - San Ramon, CA
Average daylight - San Ramon, CA

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.6h).