TODAY JUL27
TEMPERATURE66°F
HUMIDITY78%
PRESSURE30.01 inHg
WIND COND.0° 0 mph
  • 9259Fri
  • 8659Sat
  • 8760Sun
  • 8760Mon
  • 8660Tue
daynightWeather update from San Jose, San Jose International Airport, on 27 Jul 8:35 am PDT

San Jose Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January27°F77°F49°F2.8"
February32°F76°F52°F3.1"
March34°F86°F55°F1.7"
April39°F95°F57°F0.8"
May44°F99°F62°F0.3"
June47°F103°F66°F0.0"
July53°F104°F69°F0.0"
August53°F101°F68°F0.0"
September46°F99°F66°F0.0"
October43°F88°F62°F0.7"
November34°F83°F56°F0.8"
December30°F70°F50°F1.8"

Did you know?

  • The highest monthly average temperature in San Jose for July is 69 degrees.
  • The lowest monthly average temperature in San Jose for January is 49 degrees.
  • The most monthly precipitation in San Jose occurs in February with 3.1 inches.
  • The air quality index in San Jose is 3% better than the national average.
  • The pollution index in San Jose is 360% worse than the national average.

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Compare San Jose, CA Weather To Other Cities

San Jose air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexSan JoseCaliforniaNational
Air quality index485550
Pollution index23,499,80018,233,7825,100,859

San Jose air quality information

MeasurementTotal
Days measured365
Days with good air quality204
Days with moderate air quality153
Days w/ poor A.Q. for sensitive groups7
Days with unhealthy air quality1

San Jose air quality information

PollutantTotal
Arsenic0.120%
Benzene0.170%
Carbon Tetrachloride0.001%
Lead0.220%
Mercury0.140%

Average monthly San Jose temperature with heat index

San Jose monthly precipitation with daily maximum

San Jose monthly snow depth with daily maximum

San Jose monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Boulder Creek, CA4,7413628%
Alum Rock, CA10,992484%
Campbell, CA40,327484%
Fremont, CA221,654484%
Los Altos Hills, CA8,244484%
San Jose, CA986,320484%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Austin, TX864,2184118%
Jacksonville, FL837,5333824%
Indianapolis, IN835,0975918%
San Francisco, CA829,0724314%
Columbus, OH811,9434314%
San Jose, CA986,320484%
Source: The San Jose, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.