TODAY SEP19
TEMPERATURE74
HUMIDITY57
PRESSURE29.97
WIND COND.270 16.6
  • 7459Sat
  • 7958Sun
  • 7458Mon
  • 7357Tue
  • 7660Wed
daynightWeather update from Hayward, Hayward Air Terminal at

Key findings

  • The highest monthly average temperature in Southgate for August is 64 degrees
  • The lowest monthly average temperature in Southgate for December is 49 degrees
  • The most monthly precipitation in Southgate occurs in January with 3.5 inches
  • The air quality index in Southgate is 14% better than the national average
  • The pollution index in Southgate is 27% worse than the national average

Compare Hayward, CA Weather

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      Southgate 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
      January42°F58°F50°F3.5"
      February46°F61°F53°F3.3"
      March46°F64°F54°F2.6"
      April48°F66°F56°F1.8"
      May52°F69°F59°F0.6"
      June56°F73°F62°F0.1"
      July57°F75°F64°F0.0"
      August58°F76°F64°F0.0"
      September57°F76°F64°F0.2"
      October53°F72°F61°F1.4"
      November48°F66°F56°F1.3"
      December42°F58°F49°F3.2"

      Southgate 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.
      IndexSouthgateHaywardCalifornia
      Air quality index434355
      Pollution index6,427,2906,427,29018,106,726

      Southgate air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality263
      Days with moderate air quality98
      Days w/ poor A.Q. for sensitive groups4
      Days with unhealthy air quality0

      Southgate air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.110%
      Carbon Tetrachloride0.010%
      Lead0.010%
      Mercury0.003%

      Average monthly Southgate temperature with heat index

      Southgate monthly precipitation with daily maximum

      Southgate monthly snow depth with daily maximum

      Southgate monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Alameda, CA77,4094020%
      Castro Valley, CA62,8254020%
      San Ramon, CA74,3664020%
      Alamo, CA16,0784020%
      Blackhawk, CA9,4684020%
      Hayward, CA154,5074314%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Springfield, MA153,9914020%
      Macon-Bibb County, GA153,9253824%
      Pasadena, TX153,286524%
      Cary, NC155,822468%
      Salinas, CA155,8893726%
      Hayward, CA154,5074314%
      Source: The Southgate, Hayward, 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.