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

Monthly weather forecast and climate
San Jose, CA

A sunset panorama of the lit city of San Jose, California
A sunset panorama of the lit city of San Jose, California
San Jose has a Mediterranean type of climate (Köppen climate classification Csb) with warm, dry summers and wet, mild winters. San Jose, the largest city in Northern California, lies in the Santa Clara Valley, on the southern shores of the San Francisco Bay, in the proximity of the Pacific Ocean. Mountains surround the city on three sides, and its location on the rain shadow side of the Santa Cruz Mountains has a significant influence on its climate.
San Jose lies at an altitude of 25 meters above sea level and exhibits many microclimates like the rest of the Bay Area. The topography is mostly flat in the Santa Clara Valley, while hilly areas dominate the rural valley areas towards the south. San Jose has many water bodies, including the Guadalupe River that flows in its northern part. A network of walkable trails of 60 miles runs through the city and its surrounding areas that link further to neighboring rural trails, open spaces, and hills.
Summers in San Jose are usually dry, and range from warm to occasionally hot, with the average temperatures of 82°F (27.8°C) at the peak of August. Winters are relatively wet, mild to cool, with rare extreme drops in temperature. The average low temperature is 42°F (5.6°C) at the peak of winter in December. Spring and autumn are mild and dry, with the temperatures in the zone of 46°F (7.8°C) to 80°F (26.7°C).
The annual precipitation in San Jose is 15.9" (403.9mm), which is significantly lower than other places in the Bay Area. The hills become lush green during the wet season that lasts from The sunshine is ample in the absence of heavy rain as the city witnesses approximately 300 sunny days in the year. Downtown rarely receives snow, but nearby Mount Hamilton and Santa Cruz Mountains occasionally see snowfall.
The highest recorded temperature in San Jose is 109°F (42.8°C), set on June 14, 2000, while the lowest temperature on record is 19°F (-7.2°C), set on December 22, 1990.
The best time to visit San Jose is in the dry season from May to October. The summer can be occasionally hot with short periods of heatwaves, with crowds thronging the city. On either side of the summer, the late spring and fall seasons are pleasant with a little amount of rain. Late October is perfect for budget travelers as the cost of accommodations drop after the end of summer vacations, at the beginning of the wet season.

The worst time to visit San Jose, if there is any, is during the winter from December to February. The temperatures may drop to freezing during an unusually cold year. The rainfall is heavy in the southern part of South Jose with more extreme temperatures than the rest of the city. There is a possibility of rainstorms in January and February when the precipitation is the highest of the year.

San Jose lies near both the San Andreas Fault and the Calaveras Fault, which makes it prone to earthquakes. Moderate earthquakes occur on average one to two times a year, while those of magnitude higher than 6 are rare. Thunderstorms such as the monsoon storms that drift from Arizona occasionally occur in the summer that results in heavy bursts of rain and high humidity in the area.

The daily sunshine is 6 hours with partly cloudy skies that dispense 3" (76.2mm) of rain in January. The air is crisp and cold during the winter. Weather in January »

February is the wettest month of the year in San Jose with 3.1" (78.7mm) of rainfall within ten rainy days in the month. Mornings are cold, but afternoons are warm. Weather in February »

The average temperatures gradually rise to register between 47°F (8.3°C) to 66°F (18.9°C) with warm days and mildly cold nights. Weather in March »

April is mostly warm and sunny in San Jose, California, as the dry season sees a decline in the rainfall to register 1.1" (27.9mm). Weather in April »

May is a pleasant time to visit San Jose as the average temperatures register in the 52°F (11.1°C) to 63°F (17.2°C) with the disappearance of cold. Weather in May »

June is the beginning of the warm summer in San Jose, Californi, with the average temperatures in the range of 56°F (13.3°C) to 79°F (26.1°C). Weather in June »

The average temperatures are in the range of 58°F (14.4°C) to 82°F (27.8°C), which can occasionally rise to 95°F (35°C), but rarely touch 100°F (37.8°C). Weather in July »

August is usually the warmest and driest month in San Jose, California, with an average high temperature of 82°F (27.8°C). Weather in August »

The average temperatures are in the moderate range of 57°F (13.9°C) to 81°F (27.2°C), but September is mostly dry, with hardly 0.2" (5.1mm) of rainfall. Weather in September »

October is a pleasant month in the autumn of San Jose with the average temperatures in the moderate range of 52°F (11.1°C) to 74°F (23.3°C). Weather in October »

Temperatures are usually in the 46°F (7.8°C) to 64°F (17.8°C) with a few cold nights that mark the shift towards the approaching winter. Weather in November »

December is the coldest month of the year as the winter season descends with cold and wet weather. The average temperatures range in the zone of 42°F (5.6°C) to 58°F (14.4°C). Weather in December »

How many days does it rain in San Jose?

Throughout the year, in San Jose, California, there are 61.9 rainfall days.

What is the rainiest month in San Jose?

The month with the most rainfall days in San Jose is February when the rain falls for 10.3 days.

When are the longest days in San Jose?

June has the longest days of the year, with an average of 14.7h of daylight.

What are the warmest months in San Jose?

Warmest months in San Jose are July and August, with an average high-temperature of 81.9°F (27.7°C).

What is the driest month in San Jose?

The month with the least rainfall days in San Jose is July when the rain falls for 0.2 days.

What is the coldest month in San Jose?

With an average high-temperature of 57.9°F (14.4°C) and an average low-temperature of 41.9°F (5.5°C), December is the coldest month.

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

With an average of 9.6h of daylight, December has the shortest days of the year.
Average temperature - San Jose, CA
Average rainfall days - San Jose, CA

The month with the highest number of rainy days is February (10.3 days).
The month with the lowest number of rainy days is July (0.2 days).

Average daylight - San Jose, CA

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