TODAY OCT22
TEMPERATURE59
HUMIDITY75
PRESSURE29.92
WIND COND.120 1
  • 7051Tue
  • 7552Wed
  • 7854Thu
  • 8255Fri
  • 8354Sat
daynightWeather update from DW3835 Orinda at
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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"

Did you know?

  • The highest monthly average temperature in Lafayette for July is 71 degrees.
  • The lowest monthly average temperature in Lafayette for December is 47 degrees.
  • The most monthly precipitation in Lafayette occurs in January with 3.3 inches.
  • The air quality index in Lafayette is 13% better than the national average.
  • The pollution index in Lafayette is 278% worse than the national average.

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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 index435550
Pollution index19,202,40018,106,7265,066,862

Lafayette air quality information

MeasurementTotal
Days measured365
Days with good air quality241
Days with moderate air quality115
Days w/ poor A.Q. for sensitive groups9
Days with unhealthy air quality

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.
Alamo, CA16,0784314%
Bay Point, CA23,1314314%
Brisbane, CA4,5684314%
Contra Costa Centre, CA6,1904314%
Emeryville, CA11,1114314%
Lafayette, CA25,3814314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
South Portland, ME25,3973824%
Cabot, AR25,407476%
West Memphis, AR25,4114412%
Clinton, MS25,4114216%
New Lenox, IL25,3476020%
Lafayette, CA25,3814314%
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.