TODAY MAY06
TEMPERATURE51
HUMIDITY85
PRESSURE29.95
WIND COND.151 1.6
  • 7247Thu
  • 7450Fri
  • 8353Sat
  • 8152Sun
  • 8451Mon
daynightWeather update from DW3835 Orinda at

Key findings

  • The highest monthly average temperature in Lafayette for July is 70.8 degrees
  • The lowest monthly average temperature in Lafayette for December is 47.3 degrees
  • The most monthly precipitation in Lafayette occurs in January with 3.3 inches
  • The air quality index in Lafayette is 20% better than the national average
  • The pollution index in Lafayette is 279% worse than the national average

Compare Lafayette, CA Weather

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      Lafayette 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
      January39°F58°F48°F3.3"
      February43°F62°F52°F3.0"
      March45°F67°F54°F1.8"
      April47°F71°F57°F1.9"
      May52°F78°F63°F0.6"
      June56°F85°F68°F0.0"
      July58°F90°F71°F0.0"
      August57°F90°F70°F0.0"
      September56°F86°F68°F0.0"
      October50°F77°F62°F1.4"
      November45°F68°F55°F1.2"
      December40°F57°F47°F2.3"

      Lafayette 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.
      IndexLafayetteCaliforniaNational
      Air quality index405550
      Pollution index19,202,40018,106,7265,066,862

      Lafayette air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality290
      Days with moderate air quality74
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Lafayette air quality information

      PollutantTotal
      Arsenic0.180%
      Benzene0.140%
      Carbon Tetrachloride0.010%
      Lead0.280%
      Mercury0.060%

      Average monthly Lafayette temperature with heat index

      Lafayette monthly precipitation with daily maximum

      Lafayette monthly snow depth with daily maximum

      Lafayette monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Alhambra Valley, CA5014020%
      Martinez, CA37,5444020%
      Pleasant Hill, CA34,3954020%
      Saranap, CA6,2114020%
      Blackhawk, CA9,4684020%
      Lafayette, CA25,3814020%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      South Portland, ME25,3974020%
      Cabot, AR25,4074510%
      West Memphis, AR25,4114510%
      Clinton, MS25,4114412%
      New Lenox, IL25,3475510%
      Lafayette, CA25,3814020%
      Source: The Lafayette, 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.