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Key findings

  • The highest monthly average temperature in Wilmington for August is 72 degrees
  • The lowest monthly average temperature in Wilmington for December is 56 degrees
  • The most monthly precipitation in Wilmington occurs in December with 2.7 inches
  • The air quality index in Wilmington is 45% worse than the national average
  • The pollution index in Wilmington is 16% better than the national average

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      Wilmington 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
      January46°F70°F57°F2.6"
      February48°F70°F58°F2.5"
      March51°F72°F60°F1.0"
      April53°F74°F62°F0.6"
      May57°F75°F65°F0.3"
      June61°F78°F67°F0.0"
      July65°F83°F71°F0.2"
      August65°F85°F72°F0.0"
      September63°F85°F72°F0.3"
      October59°F81°F68°F0.5"
      November52°F76°F62°F0.7"
      December46°F69°F56°F2.7"

      Wilmington 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.
      IndexWilmingtonLong BeachCalifornia
      Air quality index727255
      Pollution index4,251,4104,251,41018,106,726

      Wilmington air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality66
      Days with moderate air quality208
      Days w/ poor A.Q. for sensitive groups62
      Days with unhealthy air quality28

      Wilmington air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.100%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.000%

      Average monthly Wilmington temperature with heat index

      Wilmington monthly precipitation with daily maximum

      Wilmington monthly snow depth with daily maximum

      Wilmington monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Gardena, CA59,8987244%
      Willowbrook, CA22,0357244%
      Cypress, CA48,9787244%
      La Mirada, CA49,1307244%
      Rossmoor, CA10,9337244%
      Long Beach, CA469,7937244%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Mesa, AZ470,4567448%
      Kansas City, MO471,767476%
      Atlanta, GA456,378524%
      Sacramento, CA484,530524%
      Virginia Beach, VA449,7334020%
      Long Beach, CA469,7937244%
      Source: The Wilmington, Long Beach, 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.