TODAY MAY09
TEMPERATURE50
HUMIDITY66
PRESSURE30.13
WIND COND.270 11.2
  • 6847Mon20%
  • 6544Tue
  • 6746Wed
  • 7149Thu
  • 7051Fri30%30%
daynightWeather update from Wilmington, New Castle County Airport at

Key findings

  • The highest monthly average temperature in Wilmington for July is 77.2 degrees
  • The lowest monthly average temperature in Wilmington for February is 33.8 degrees
  • The most monthly precipitation in Wilmington occurs in October with 6.1 inches
  • The air quality index in Wilmington is 3% worse than the national average
  • The pollution index in Wilmington is 57% better than the national average

Compare Wilmington, DE Weather

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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
      January27°F43°F34°F3.3"
      February26°F43°F34°F2.5"
      March34°F54°F43°F3.7"
      April44°F66°F54°F4.9"
      May52°F74°F63°F3.2"
      June64°F83°F73°F5.0"
      July68°F87°F77°F5.6"
      August67°F86°F76°F3.7"
      September59°F79°F69°F4.1"
      October48°F67°F57°F6.1"
      November40°F57°F48°F3.3"
      December30°F46°F38°F5.3"

      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.
      IndexWilmingtonDelawareNational
      Air quality index514150
      Pollution index2,169,6003,759,2125,066,862

      Wilmington air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality180
      Days with moderate air quality169
      Days w/ poor A.Q. for sensitive groups16
      Days with unhealthy air quality0

      Wilmington air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.030%
      Carbon Tetrachloride0.002%
      Lead0.010%
      Mercury0.004%

      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.
      Woodstown, NJ3,5484020%
      Alloway, NJ1,4574020%
      Quinton, NJ5494020%
      Pennsville, NJ11,4214020%
      Salem, NJ4,9314020%
      Wilmington, DE71,502512%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Apple Valley, CA71,4558978%
      Pawtucket, RI71,3894412%
      Missouri City, TX71,732524%
      Gulfport, MS71,2654216%
      Lafayette, IN71,2494216%
      Wilmington, DE71,502512%
      Source: The Wilmington, DE 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.