TODAY MAR01
TEMPERATURE50
HUMIDITY
PRESSURE29.73
WIND COND. 7.6
  • 3932Tue
  • 5035Wed
  • 4728Thu
  • 4229Fri
  • 4130Sat
daynightWeather update from Georgetown - Delaware Coastal Airport at

Key findings

  • The highest monthly average temperature in Dewey Beach for July is 78 degrees
  • The lowest monthly average temperature in Dewey Beach for January is 37 degrees
  • The most monthly precipitation in Dewey Beach occurs in June with 5.6 inches
  • The air quality index in Dewey Beach is 28% better than the national average
  • The pollution index in Dewey Beach is 42% worse than the national average

Compare Dewey Beach, DE Weather

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      Dewey Beach 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
      January28°F46°F37°F2.9"
      February28°F48°F38°F2.3"
      March36°F57°F46°F3.1"
      April45°F68°F56°F3.5"
      May54°F77°F65°F3.1"
      June64°F85°F74°F5.6"
      July69°F89°F78°F4.5"
      August67°F87°F76°F4.8"
      September61°F81°F70°F4.7"
      October50°F71°F60°F4.4"
      November39°F60°F49°F2.9"
      December33°F52°F42°F3.6"

      Dewey Beach 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.
      IndexDewey BeachDelawareNational
      Air quality index364150
      Pollution index7,219,5403,759,2125,066,862

      Dewey Beach air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality303
      Days with moderate air quality61
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality

      Dewey Beach air quality information

      PollutantTotal
      Arsenic0.060%
      Benzene0.070%
      Carbon Tetrachloride0.000%
      Lead0.030%
      Mercury0.110%

      Average monthly Dewey Beach temperature with heat index

      Dewey Beach monthly precipitation with daily maximum

      Dewey Beach monthly snow depth with daily maximum

      Dewey Beach monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Bethany Beach, DE8713628%
      Lewes, DE2,9553628%
      Milton, DE2,7563628%
      Dagsboro, DE9313628%
      Long Neck, DE2,6563628%
      Dewey Beach, DE2893628%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Accident, MD2893628%
      Blue, OK289325550%
      Pulaski, IA2892942%
      Strausstown, PA2894216%
      Adelphi, OH2892550%
      Dewey Beach, DE2893628%
      Source: The Dewey Beach, 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.