TODAY MAY19
TEMPERATURE55
HUMIDITY76
PRESSURE
WIND COND.52 1.6
  • 6740Sun
  • 6539Mon
  • 7243Tue
  • 6943Wed
  • 6843Thu
daynightWeather update from DENTEN CREEK at
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Weather Quick Facts

  • The highest monthly average temperature in Johnsville for July is 70.9 degrees
  • The lowest monthly average temperature in Johnsville for December is 39.2 degrees
  • The most monthly precipitation in Johnsville occurs in December with 11.7 inches
  • The air quality index in Johnsville is 5% worse than the national average
  • The pollution index in Johnsville is 34% better than the national average

Compare Johnsville, CA Weather

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      Johnsville 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
      January35°F49°F41°F7.8"
      February35°F47°F40°F8.4"
      March36°F49°F41°F10.1"
      April38°F54°F45°F5.7"
      May46°F62°F53°F3.7"
      June55°F71°F62°F1.4"
      July64°F79°F71°F0.1"
      August63°F79°F70°F0.1"
      September58°F74°F65°F1.4"
      October48°F63°F54°F4.8"
      November40°F53°F46°F7.3"
      December34°F46°F39°F11.7"

      Johnsville 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.
      IndexJohnsvilleCaliforniaNational
      Air quality index445542
      Pollution index1,799,83010,473,1902,726,193

      Johnsville air quality information

      MeasurementTotal
      Days measured361
      Days with good air quality273
      Days with moderate air quality83
      Days w/ poor A.Q. for sensitive groups5
      Days with unhealthy air quality0

      Johnsville air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.030%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.004%

      Average monthly Johnsville temperature with heat index

      Johnsville monthly precipitation with daily maximum

      Johnsville monthly snow depth with daily maximum

      Johnsville monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Calpine, CA1644412.0%
      Delleker, CA6014412.0%
      Lake Davis, CA914412.0%
      Portola, CA1,7554412.0%
      Greenhorn, CA2024412.0%
      Johnsville, CA04412.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Chase, AK03138.0%
      Chiniak, AK03138.0%
      Chisana, AK03138.0%
      Dot Lake, AK03824.0%
      Eureka Roadhouse, AK03138.0%
      Johnsville, CA04412.0%
      Source: The Johnsville, 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.