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San Jose, CA Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in San Jose, CA?
San Jose, CA gets 16.1 in of precipitation a year over about 64 rainy days. July is the warmest month (average high 83°F) and January the coldest (average low 43°F).
Mediterranean climate
San Jose, CA has warm summers and mild winters. Daytime highs range from about 59°F in December to 83°F in July. February is usually the wettest month. The most comfortable time to visit is typically March to June and October to November, when daytime highs sit near 72°F.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 44° | 60° |
| Spring | Mar–May | 50° | 71° |
| Summer | Jun–Aug | 58° | 82° |
| Autumn | Sep–Nov | 53° | 74° |
How much rain does San Jose get?
San Jose gets 16.1 in of precipitation in an average year, spread over about 64 days with measurable rain. That is fewer rainy days than 72% of the US.
February is the wettest month, with 3.2 in. July is the driest, with 0.0 in. February has the most rainy days, about 11.
The longest dry spell in the last five years lasted 120 days, to September 9, 2025.
From September 2025 to August 2026 San Jose got 13.9 in of rain, against a normal of 16.1 in for those months. February 2026 had the most, with 3.6 in.
See where San Jose ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in California.
San Jose weather by month
San Jose weather in January
In January, San Jose averages a high of 59°F and a low of 43°F. It gets 3.0 in of precipitation over about 10 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The January record high is 76°F (1988) and the record low is 27°F (1973).
San Jose weather in February
In February, San Jose averages a high of 62°F and a low of 46°F. It gets 3.2 in of precipitation over about 11 rainy days. Estimated sunshine is 59% of daylight hours, derived from ERA5 cloud cover. The February record high is 81°F (1986) and the record low is 26°F (1989).
San Jose weather in March
In March, San Jose averages a high of 67°F and a low of 48°F. It gets 2.6 in of precipitation over about 9 rainy days. Estimated sunshine is 45% of daylight hours, derived from ERA5 cloud cover. The March record high is 88°F (2026) and the record low is 31°F (1971). March is one of the most comfortable months to visit.
San Jose weather in April
In April, San Jose averages a high of 70°F and a low of 49°F. It gets 1.2 in of precipitation over about 6 rainy days. Estimated sunshine is 57% of daylight hours, derived from ERA5 cloud cover. The April record high is 95°F (1989) and the record low is 36°F (1976). April is one of the most comfortable months to visit.
San Jose weather in May
In May, San Jose averages a high of 75°F and a low of 53°F. It gets 0.5 in of precipitation over about 4 rainy days. Estimated sunshine is 65% of daylight hours, derived from ERA5 cloud cover. The May record high is 101°F (1984) and the record low is 39°F (1975). May is one of the most comfortable months to visit.
San Jose weather in June
In June, San Jose averages a high of 80°F and a low of 56°F. It gets 0.2 in of precipitation over about 1 rainy days. Estimated sunshine is 71% of daylight hours, derived from ERA5 cloud cover. The June record high is 109°F (2000) and the record low is 43°F (1971). June is one of the most comfortable months to visit.
San Jose weather in July
In July, San Jose averages a high of 83°F and a low of 59°F. It gets 0.0 in of precipitation over about 0 rainy days. Estimated sunshine is 79% of daylight hours, derived from ERA5 cloud cover. The July record high is 108°F (1972) and the record low is 48°F (1975).
San Jose weather in August
In August, San Jose averages a high of 83°F and a low of 59°F. It gets 0.0 in of precipitation over about 0 rainy days. Estimated sunshine is 78% of daylight hours, derived from ERA5 cloud cover. The August record high is 105°F (1993) and the record low is 47°F (1973).
San Jose weather in September
In September, San Jose averages a high of 81°F and a low of 58°F. It gets 0.1 in of precipitation over about 1 rainy days. Estimated sunshine is 75% of daylight hours, derived from ERA5 cloud cover. The September record high is 104°F (1971) and the record low is 45°F (1970).
San Jose weather in October
In October, San Jose averages a high of 75°F and a low of 53°F. It gets 0.8 in of precipitation over about 3 rainy days. Estimated sunshine is 71% of daylight hours, derived from ERA5 cloud cover. The October record high is 106°F (2024) and the record low is 36°F (1971). October is one of the most comfortable months to visit.
San Jose weather in November
In November, San Jose averages a high of 65°F and a low of 47°F. It gets 1.4 in of precipitation over about 7 rainy days. Estimated sunshine is 57% of daylight hours, derived from ERA5 cloud cover. The November record high is 83°F (1997) and the record low is 31°F (1993). November is one of the most comfortable months to visit.
San Jose weather in December
In December, San Jose averages a high of 59°F and a low of 43°F. It gets 3.1 in of precipitation over about 11 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The December record high is 74°F (2024) and the record low is 19°F (1990).
Sunshine, humidity and wind in San Jose
July is the sunniest month in San Jose, with estimated sunshine of 79% of daylight hours from ERA5 cloud cover. January is the cloudiest, at 39%. The annual cloud-cover estimate is 61% of daylight hours; it is not a measurement of sunshine duration. San Jose is sunnier than 88% of the US.
Humidity peaks in December at 76% and is lowest in October at 57%.
San Jose has about 19 days a year above 90°F. San Jose is cooler than 62% of the US.
Thunderstorms occur on about 3 days a year.
See where San Jose ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.
First and last freeze in San Jose
The first fall freeze in San Jose typically comes around December 14, and the last spring freeze around January 18. That leaves a frost-free growing season of about 330 days.
San Jose weather records
These records cover SAN JOSE during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the San Jose station is 109°F, on June 14, 2000. The coldest is 19°F, on December 22, 1990.
The wettest day in the available station history brought 2.4 in of precipitation, on November 29, 1970.
30 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.6°F per decade since 1970.
The best time to visit San Jose
The most comfortable time to visit is typically March to June and October to November, when daytime highs sit near 72°F.
Winter (December–February) is mild, with average highs around 60°F and lows near 44°F.
Spring (March–May) is warm, with average highs around 71°F and lows near 50°F.
Summer (June–August) is warm, with average highs around 82°F and lows near 58°F.
Autumn (September–November) is warm, with average highs around 74°F and lows near 53°F.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 43° | 59° | 3.0 in | 10 | 75% | 39% | 76° | 27° |
| February | 46° | 62° | 3.2 in | 11 | 64% | 59% | 81° | 26° |
| March | 48° | 67° | 2.6 in | 9 | 69% | 45% | 88° | 31° |
| April | 49° | 70° | 1.2 in | 6 | 68% | 57% | 95° | 36° |
| May | 53° | 75° | 0.54 in | 4 | 66% | 65% | 101° | 39° |
| June | 56° | 80° | 0.17 in | 1 | 63% | 71% | 109° | 43° |
| July | 59° | 83° | 0.01 in | 0 | 63% | 79% | 108° | 48° |
| August | 59° | 83° | 0.03 in | 0 | 64% | 78% | 105° | 47° |
| September | 58° | 81° | 0.07 in | 1 | 64% | 75% | 104° | 45° |
| October | 53° | 75° | 0.80 in | 3 | 57% | 71% | 106° | 36° |
| November | 47° | 65° | 1.4 in | 7 | 65% | 57% | 83° | 31° |
| December | 43° | 59° | 3.1 in | 11 | 76% | 39% | 74° | 19° |
Station: SAN JOSE, 3 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
San Jose climate questions
How much rain does San Jose get?
San Jose gets 16.1 in of precipitation in an average year, over about 64 rainy days.
What is the wettest month in San Jose?
February is the wettest month in San Jose, with 3.2 in. July is the driest, with 0.0 in.
How many rainy days does San Jose have a year?
San Jose has about 64 days with measurable rain in an average year. February has the most, about 11.
What is the hottest month in San Jose?
July is the warmest month in San Jose, with an average high of 83°F.
What is the coldest month in San Jose?
January is the coldest month in San Jose, with an average low of 43°F.
What is the record high temperature in San Jose?
Within the available 1970–2026 station history, the record high at the San Jose station is 109°F, set on June 14, 2000. The record low is 19°F, on December 22, 1990.
What is the sunniest month in San Jose?
July is the sunniest month in San Jose, with estimated sunshine of 79% of daylight hours from ERA5 cloud cover. January is the cloudiest.
When is the first frost in San Jose?
The first fall freeze in San Jose typically comes around December 14. The last spring freeze is around January 18.
What is the best time to visit San Jose?
The most comfortable time to visit is typically March to June and October to November, when daytime highs sit near 72°F.