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San Clemente 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
January48°F66°F56°F5.1"
February48°F64°F56°F4.2"
March51°F66°F58°F2.4"
April53°F68°F60°F1.6"
May54°F67°F58°F2.3"
June58°F69°F60°F0.1"
July63°F72°F67°F0.5"
August63°F75°F68°F1.0"
September62°F75°F68°F0.1"
October58°F71°F64°F2.0"
November52°F68°F59°F2.6"
December49°F64°F55°F7.2"

Did you know?

  • The highest monthly average temperature in San Clemente for August is 68 degrees.
  • The lowest monthly average temperature in San Clemente for December is 55 degrees.
  • The most monthly precipitation in San Clemente occurs in December with 7.2 inches.
  • The air quality index in San Clemente is 70% worse than the national average.
  • The pollution index in San Clemente is 772% worse than the national average.

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San Clemente 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.
IndexSan ClementeCaliforniaNational
Air quality index855550
Pollution index44,192,60018,106,7265,066,862

San Clemente 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

San Clemente air quality information

PollutantTotal
Arsenic0.030%
Benzene0.280%
Carbon Tetrachloride0.001%
Lead0.220%
Mercury0.140%

Average monthly San Clemente temperature with heat index

San Clemente monthly precipitation with daily maximum

San Clemente monthly snow depth with daily maximum

San Clemente monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Aliso Viejo, CA50,2198570%
Laguna Beach, CA23,2048570%
Lake Forest, CA80,6588570%
Mission Viejo, CA96,1788570%
Coto de Caza, CA14,8458570%
San Clemente, CA65,0828570%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Delray Beach, FL65,0444118%
Youngstown, OH65,1614510%
Rockville, MD65,171492%
Laguna Niguel, CA64,9848570%
Marysville, WA64,9553138%
San Clemente, CA65,0828570%
Source: The San Clemente, 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.