TODAY JUN06
TEMPERATURE66
HUMIDITY76
PRESSURE
WIND COND.284 3
  • 8054Sun
  • 8661Mon
  • 9465Tue
  • 9665Wed
  • 8860Thu
daynightWeather update from SANTA FE DAM at
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Walnut 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
January40°F70°F54°F1.6"
February41°F71°F55°F1.4"
March44°F75°F58°F0.8"
April47°F78°F61°F0.4"
May52°F82°F65°F0.3"
June57°F89°F71°F0.0"
July62°F94°F76°F0.1"
August61°F96°F77°F0.0"
September59°F94°F74°F0.1"
October52°F86°F67°F0.3"
November44°F78°F60°F0.4"
December39°F69°F53°F2.0"

Did you know?

  • The highest monthly average temperature in Walnut for August is 77 degrees.
  • The lowest monthly average temperature in Walnut for December is 53 degrees.
  • The most monthly precipitation in Walnut occurs in December with 2 inches.
  • The air quality index in Walnut is 71% worse than the national average.
  • The pollution index in Walnut is 83% better than the national average.

Compare Walnut, CA Weather To Other Cities

      vs

      Walnut 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.
      IndexWalnutCaliforniaNational
      Air quality index855550
      Pollution index858,65218,106,7265,066,862

      Walnut air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality24
      Days with moderate air quality211
      Days w/ poor A.Q. for sensitive groups102
      Days with unhealthy air quality25

      Walnut air quality information

      PollutantTotal
      Arsenic0.002%
      Benzene0.010%
      Carbon Tetrachloride0.000%
      Lead0.020%
      Mercury0.001%

      Average monthly Walnut temperature with heat index

      Walnut monthly precipitation with daily maximum

      Walnut monthly snow depth with daily maximum

      Walnut monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Arcadia, CA57,7557448%
      Baldwin Park, CA76,5117448%
      Cerritos, CA49,7977448%
      Citrus, CA11,7807448%
      Duarte, CA21,7927448%
      Walnut, CA30,0268570%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      North Chicago, IL30,0233530%
      Rochester, NH30,0522648%
      Matthews, NC30,0544216%
      Westchester, FL30,0584118%
      San Pablo, CA29,9914314%
      Walnut, CA30,0268570%
      Source: The Walnut, 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.