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Hewlett 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°F43°F34°F3.4"
February26°F44°F34°F2.8"
March33°F52°F41°F3.7"
April43°F63°F52°F3.7"
May52°F71°F61°F4.2"
June62°F81°F71°F4.7"
July69°F86°F77°F4.2"
August68°F85°F76°F4.8"
September61°F79°F69°F3.4"
October51°F68°F59°F4.8"
November39°F57°F48°F3.0"
December32°F48°F40°F4.9"

Did you know?

  • The highest monthly average temperature in Hewlett for July is 77 degrees.
  • The lowest monthly average temperature in Hewlett for January is 34 degrees.
  • The most monthly precipitation in Hewlett occurs in December with 4.9 inches.
  • The air quality index in Hewlett is 6% worse than the national average.
  • The pollution index in Hewlett is n/a the national average.

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Hewlett 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.
IndexHewlettNew YorkNational
Air quality index534350
Pollution index000

Hewlett air quality information

MeasurementTotal
Days measured365
Days with good air quality161
Days with moderate air quality189
Days w/ poor A.Q. for sensitive groups15
Days with unhealthy air quality

Hewlett air quality information

PollutantTotal
Arsenic0.060%
Benzene0.130%
Carbon Tetrachloride0.130%
Lead0.070%
Mercury0.060%

Average monthly Hewlett temperature with heat index

Hewlett monthly precipitation with daily maximum

Hewlett monthly snow depth with daily maximum

Hewlett monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Source: The Hewlett, 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.