TODAY JUN19
TEMPERATURE91
HUMIDITY56
PRESSURE29.82
WIND COND.20 10.3
  • 7769Wed70%
  • 7666Thu60%
  • 7868Fri
  • 8071Sat40%
  • 8471Sun40%30%
daynightWeather update from Georgetown - Delaware Coastal Airport at

Dewey Beach Average Weather

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
January10°F71°F39°Fn/a
February12°F73°F38°Fn/a
March16°F80°F44°Fn/a
April31°F90°F54°Fn/a
May42°F91°F61°Fn/a
June55°F100°F72°Fn/a
July60°F98°F77°Fn/a
August61°F99°F77°Fn/a
September51°F93°F70°Fn/a
October38°F86°F61°Fn/a
November25°F76°F51°Fn/a
December20°F71°F42°Fn/a

Did you know?

  • The highest monthly average temperature in Dewey Beach for August is 77 degrees.
  • The lowest monthly average temperature in Dewey Beach for February is 38 degrees.
  • The most monthly precipitation in Dewey Beach occurs in January with 0 inches.
  • The air quality index in Dewey Beach is 27% better than the national average.
  • The pollution index in Dewey Beach is 42% worse than the national average.

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Compare Dewey Beach, DE Weather To Other Cities

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, MD2893236%
Bowie, AZ2894412%
Westwood, MO2896020%
Diggins, MO2893922%
Strausstown, PA2894314%
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.