TODAY MAY18
TEMPERATURE45
HUMIDITY88
PRESSURE
WIND COND.34 3.2
  • 7446
  • 6745Wed
  • 6746Thu
  • 7246Fri
  • 7448Sat
daynightWeather update from LOS ALTOS at

Key findings

  • The highest monthly average temperature in Cupertino for July is 66.7 degrees
  • The lowest monthly average temperature in Cupertino for January is 50.4 degrees
  • The most monthly precipitation in Cupertino occurs in December with 2.6 inches
  • The air quality index in Cupertino is 14% better than the national average
  • The pollution index in Cupertino is 127% worse than the national average

Compare Cupertino, CA Weather

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      Cupertino Average Temperature

      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
      January42°F61°F50°F2.4"
      February45°F63°F53°F2.4"
      March47°F67°F56°F2.0"
      April49°F70°F58°F1.3"
      May53°F73°F61°F0.3"
      June56°F77°F65°F0.2"
      July59°F78°F67°F0.0"
      August59°F78°F66°F0.0"
      September57°F80°F67°F0.1"
      October53°F75°F63°F0.7"
      November47°F67°F56°F1.3"
      December42°F60°F51°F2.6"

      Cupertino 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.
      IndexCupertinoCaliforniaNational
      Air quality index435550
      Pollution index11,477,20018,106,7265,066,862

      Cupertino air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality263
      Days with moderate air quality98
      Days w/ poor A.Q. for sensitive groups4
      Days with unhealthy air quality0

      Cupertino air quality information

      PollutantTotal
      Arsenic0.070%
      Benzene0.110%
      Carbon Tetrachloride0.000%
      Lead0.160%
      Mercury0.090%

      Average monthly Cupertino temperature with heat index

      Cupertino monthly precipitation with daily maximum

      Cupertino monthly snow depth with daily maximum

      Cupertino monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Brookdale, CA2,4463530%
      Lexington Hills, CA2,6173530%
      Loma Mar, CA1503530%
      Boulder Creek, CA4,4423530%
      Lompico, CA9023530%
      Cupertino, CA60,2974314%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Auburn, AL60,3184216%
      National City, CA60,3496428%
      Palm Harbor, FL60,2364314%
      Lake Elsinore, CA60,2308978%
      Meriden, CT60,2034118%
      Cupertino, CA60,2974314%
      Source: The Cupertino, 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.