TODAY MAY28
TEMPERATURE95
HUMIDITY23
PRESSURE
WIND COND.338 3
  • 8457Thu
  • 8058Fri20%
  • 7556Sat40%
  • 7554Sun
  • 7554Mon
daynightWeather update from LOS ALTOS at
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Atherton 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"

Did you know?

  • The highest monthly average temperature in Atherton for July is 67 degrees.
  • The lowest monthly average temperature in Atherton for January is 50 degrees.
  • The most monthly precipitation in Atherton occurs in December with 2.6 inches.
  • The air quality index in Atherton is 3% better than the national average.
  • The pollution index in Atherton is 90% worse than the national average.

Compare Atherton, CA Weather To Other Cities

      vs

      Atherton 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.
      IndexAthertonCaliforniaNational
      Air quality index485550
      Pollution index9,645,61018,106,7265,066,862

      Atherton 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

      Atherton air quality information

      PollutantTotal
      Arsenic0.140%
      Benzene0.070%
      Carbon Tetrachloride0.000%
      Lead0.100%
      Mercury0.020%

      Average monthly Atherton temperature with heat index

      Atherton monthly precipitation with daily maximum

      Atherton monthly snow depth with daily maximum

      Atherton monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Loma Mar, CA1503628%
      Pescadero, CA1,0403628%
      San Lorenzo, CA24,7904314%
      South San Francisco, CA66,5874314%
      Cambrian Park, CA3,259484%
      Atherton, CA7,127484%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Putnam, CT7,1293334%
      LaFayette, GA7,1303334%
      La Follette, TN7,1313628%
      Providence, UT7,122476%
      Seward, NE7,1333432%
      Atherton, CA7,127484%
      Source: The Atherton, 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.