TODAY MAY13
TEMPERATURE67
HUMIDITY52
PRESSURE29.95
WIND COND.340 5.4
  • 9656Thu
  • 9554Fri
  • 8554Sat20%
  • 8455Sun20%
  • 8855Mon
daynightWeather update from Visalia, Visalia Municipal Airport at

Key findings

  • The highest monthly average temperature in London for July is 81.3 degrees
  • The lowest monthly average temperature in London for December is 45.4 degrees
  • The most monthly precipitation in London occurs in December with 5.6 inches
  • The air quality index in London is 33% worse than the national average
  • The pollution index in London is 331% worse than the national average

Compare London, CA Weather

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      London 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
      January38°F58°F46°F4.2"
      February40°F64°F51°F3.7"
      March44°F71°F56°F3.5"
      April48°F76°F61°F4.2"
      May54°F86°F69°F1.1"
      June60°F94°F77°F3.0"
      July65°F98°F81°F0.5"
      August63°F97°F79°F0.2"
      September58°F93°F74°F2.3"
      October50°F81°F64°F4.6"
      November42°F68°F53°F3.1"
      December36°F58°F45°F5.6"

      London 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.
      IndexLondonCaliforniaNational
      Air quality index665550
      Pollution index21,828,10018,106,7265,066,862

      London air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality127
      Days with moderate air quality157
      Days w/ poor A.Q. for sensitive groups78
      Days with unhealthy air quality2

      London air quality information

      PollutantTotal
      Arsenic0.160%
      Benzene0.440%
      Carbon Tetrachloride0.000%
      Lead0.100%
      Mercury0.200%

      Average monthly London temperature with heat index

      London monthly precipitation with daily maximum

      London monthly snow depth with daily maximum

      London monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Grangeville, CA4925612%
      Laton, CA1,8775612%
      Armona, CA3,6555612%
      Hanford, CA54,9125612%
      Kingsburg, CA11,7165612%
      London, CA2,0846632%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Syracuse, NE2,0843138%
      Labadieville, LA2,0834118%
      Plainfield Village, CT2,0853726%
      Saugerties South, NY2,0833628%
      Marceline, MO2,0833824%
      London, CA2,0846632%
      Source: The London, 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.