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Key findings

  • The highest monthly average temperature in San Mateo for August is 84 degrees
  • The lowest monthly average temperature in San Mateo for January is 56 degrees
  • The most monthly precipitation in San Mateo occurs in June with 8.1 inches
  • The air quality index in San Mateo is 14% better than the national average
  • The pollution index in San Mateo is 29% worse than the national average

Compare Jacksonville, FL Weather

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      San Mateo 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
      January47°F67°F56°F3.1"
      February49°F70°F59°F2.9"
      March55°F76°F65°F2.8"
      April63°F82°F72°F2.6"
      May69°F87°F77°F4.8"
      June75°F92°F82°F8.1"
      July77°F93°F84°F6.4"
      August77°F93°F84°F6.7"
      September75°F89°F81°F4.7"
      October66°F83°F74°F3.4"
      November56°F75°F65°F1.8"
      December52°F71°F60°F2.9"

      San Mateo 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 MateoJacksonvilleFlorida
      Air quality index434335
      Pollution index6,554,7106,554,71015,391,344

      San Mateo air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality245
      Days with moderate air quality119
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      San Mateo air quality information

      PollutantTotal
      Arsenic0.020%
      Benzene0.040%
      Carbon Tetrachloride0.002%
      Lead0.070%
      Mercury0.010%

      Average monthly San Mateo temperature with heat index

      San Mateo monthly precipitation with daily maximum

      San Mateo monthly snow depth with daily maximum

      San Mateo monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Callahan, FL1,2034314%
      Yulee, FL12,2174314%
      Jacksonville Beach, FL22,5194314%
      Nassau Village-Ratliff, FL4,9944314%
      Atlantic Beach, FL13,0894314%
      Jacksonville, FL856,6164314%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      San Francisco, CA850,2824020%
      Indianapolis, IN846,674548%
      Columbus, OH837,038468%
      Fort Worth, TX815,930512%
      Charlotte, NC808,834492%
      Jacksonville, FL856,6164314%
      Source: The San Mateo, Jacksonville, FL 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.