TODAY APR19
TEMPERATURE46
HUMIDITY79
PRESSURE102130
WIND COND.20 13
  • 5545Fri50%
  • 6442Sat50%
  • 5843Sun
  • 6244Mon
  • 6248Tue
daynightWeather update from Islip, Long Island Mac Arthur Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Head of the Harbor for July is 74.5 degrees
  • The lowest monthly average temperature in Head of the Harbor for February is 32.2 degrees
  • The most monthly precipitation in Head of the Harbor occurs in October with 6.9 inches
  • The air quality index in Head of the Harbor is 2% worse than the national average
  • The pollution index in Head of the Harbor is 1338% worse than the national average

Compare Head of the Harbor, NY Weather

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      Head of the 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
      January25°F40°F32°F3.4"
      February25°F40°F32°F3.7"
      March31°F48°F39°F4.8"
      April41°F60°F50°F5.6"
      May50°F68°F58°F3.9"
      June61°F78°F69°F4.3"
      July67°F83°F74°F5.4"
      August66°F82°F74°F3.1"
      September59°F76°F67°F4.1"
      October48°F65°F56°F6.9"
      November39°F55°F47°F4.0"
      December30°F44°F37°F6.2"

      Head of the 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.
      IndexHead of the HarborNew YorkNational
      Air quality index434342
      Pollution index39,208,8006,179,2752,726,193

      Head of the Harbor air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality262
      Days with moderate air quality82
      Days w/ poor A.Q. for sensitive groups18
      Days with unhealthy air quality3

      Head of the Harbor air quality information

      PollutantTotal
      Arsenic0.060%
      Benzene0.320%
      Carbon Tetrachloride0.020%
      Lead0.320%
      Mercury0.130%

      Average monthly Head of the Harbor temperature with heat index

      Head of the Harbor monthly precipitation with daily maximum

      Head of the Harbor monthly snow depth with daily maximum

      Head of the Harbor monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Bayport, NY8,5844314.0%
      Brentwood, NY62,7434314.0%
      Holbrook, NY25,7944314.0%
      Ronkonkoma, NY18,9534314.0%
      Gordon Heights, NY4,1794314.0%
      Head of the Harbor, NY1,4544314.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Noank, CT1,4543726.0%
      Griggsville, IL1,4544118.0%
      Long Creek, IL1,4544412.0%
      Babbitt, MN1,4543530.0%
      Goodman, MO1,4543726.0%
      Head of the Harbor, NY1,4544314.0%
      Source: The Head of the Harbor, NY 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.