TODAY OCT22
TEMPERATURE57
HUMIDITY44
PRESSURE30.18
WIND COND.200 6.9
  • 6544Tue
  • 5640Wed
  • 5239Thu
  • 5143Fri40%
  • 5443Sat70%70%
daynightWeather update from Annapolis, United States Naval Academy at
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Herald Harbor 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
January29°F44°F36°F4.8"
February29°F45°F36°F3.9"
March36°F54°F44°F5.5"
April47°F66°F55°F5.8"
May56°F73°F64°F6.3"
June67°F83°F74°F6.4"
July71°F86°F78°F6.7"
August70°F84°F77°F7.1"
September65°F80°F72°F5.9"
October53°F69°F61°F6.4"
November42°F58°F49°F5.2"
December33°F48°F40°F5.9"

Did you know?

  • The highest monthly average temperature in Herald Harbor for July is 78 degrees.
  • The lowest monthly average temperature in Herald Harbor for January is 36 degrees.
  • The most monthly precipitation in Herald Harbor occurs in August with 7.1 inches.
  • The air quality index in Herald Harbor is 7% better than the national average.
  • The pollution index in Herald Harbor is 31% better than the national average.

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Compare Herald Harbor, MD Weather To Other Cities

Herald Harbor 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.
IndexHerald HarborMarylandNational
Air quality index464350
Pollution index3,494,0106,283,4705,066,862

Herald Harbor air quality information

MeasurementTotal
Days measured365
Days with good air quality213
Days with moderate air quality147
Days w/ poor A.Q. for sensitive groups5
Days with unhealthy air quality

Herald Harbor air quality information

PollutantTotal
Arsenic0.010%
Benzene0.040%
Carbon Tetrachloride0.002%
Lead0.010%
Mercury0.001%

Average monthly Herald Harbor temperature with heat index

Herald Harbor monthly precipitation with daily maximum

Herald Harbor monthly snow depth with daily maximum

Herald Harbor monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Dundalk, MD62,337468%
Ellicott City, MD70,780468%
Highland Beach, MD114468%
Odenton, MD39,759468%
Riviera Beach, MD13,586468%
Herald Harbor, MD2,620468%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Mars Hill, NC2,6204020%
Potterville, MI2,6213432%
State Line, PA2,6194118%
Pleasant Gap, PA2,6193922%
Belvidere, NJ2,6213922%
Herald Harbor, MD2,620468%
Source: The Herald Harbor, MD 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.