TODAY MAR04
TEMPERATURE40
HUMIDITY48
PRESSURE
WIND COND.
  • 7146Fri
  • 6642Sat
  • 6444Sun
  • 5940Mon
  • 5639Tue
daynightWeather update from China Lake, Naval Air Facility at

Key findings

  • The highest monthly average temperature in Johannesburg for July is 90 degrees
  • The lowest monthly average temperature in Johannesburg for December is 44 degrees
  • The most monthly precipitation in Johannesburg occurs in January with 0.8 inches
  • The air quality index in Johannesburg is 35% worse than the national average
  • The pollution index in Johannesburg is 316% worse than the national average

Compare Johannesburg, CA Weather

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      Johannesburg 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
      January31°F62°F45°F0.8"
      February35°F67°F51°F0.5"
      March42°F74°F58°F0.2"
      April47°F80°F64°F0.0"
      May55°F89°F73°F0.0"
      June64°F100°F84°F0.0"
      July71°F106°F90°F0.0"
      August68°F104°F87°F0.1"
      September60°F96°F79°F0.2"
      October49°F83°F66°F0.1"
      November38°F71°F54°F0.2"
      December30°F59°F44°F0.5"

      Johannesburg 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.
      IndexJohannesburgCaliforniaNational
      Air quality index675550
      Pollution index21,095,50018,106,7265,066,862

      Johannesburg air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality119
      Days with moderate air quality151
      Days w/ poor A.Q. for sensitive groups87
      Days with unhealthy air quality6

      Johannesburg air quality information

      PollutantTotal
      Arsenic1.700%
      Benzene0.350%
      Carbon Tetrachloride0.004%
      Lead0.580%
      Mercury1.550%

      Average monthly Johannesburg temperature with heat index

      Johannesburg monthly precipitation with daily maximum

      Johannesburg monthly snow depth with daily maximum

      Johannesburg monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Randsburg, CA1566734%
      Johannesburg, CA1276734%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Farmington, KY1274412%
      Redbird, OK127590%
      Beaver, IA1273726%
      Emison, IN1273628%
      South Gorin, MO1272942%
      Johannesburg, CA1276734%
      Source: The Johannesburg, 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.