TODAY NOV25
TEMPERATURE34
HUMIDITY82
PRESSURE101760
WIND COND.240 9.4
  • 6038Tue80%
  • 5040Wed
  • 533770%70%
  • 4730Fri
  • 4229Sat
daynightWeather update from Islip, Long Island Mac Arthur Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Great River for July is 75.9 degrees
  • The lowest monthly average temperature in Great River for January is 32.3 degrees
  • The most monthly precipitation in Great River occurs in August with 5.6 inches
  • The air quality index in Great River is 2% worse than the national average
  • The pollution index in Great River is 1338% worse than the national average

Compare Great River, NY Weather

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      Great River 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
      January24°F41°F32°F4.0"
      February24°F43°F33°F3.0"
      March31°F50°F40°F4.2"
      April41°F61°F50°F3.5"
      May51°F71°F60°F3.6"
      June60°F79°F69°F4.7"
      July68°F85°F76°F3.1"
      August65°F83°F74°F5.6"
      September60°F78°F68°F3.1"
      October49°F67°F58°F4.1"
      November37°F56°F46°F3.0"
      December31°F47°F39°F4.9"

      Great River 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.
      IndexGreat RiverNew YorkNational
      Air quality index434342
      Pollution index39,208,8006,179,2752,726,193

      Great River air quality

      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

      Air quality details

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

      Average monthly Great River temperature with heat index

      Great River monthly precipitation with daily maximum

      Great River monthly snow depth with daily maximum

      Great River monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Eatons Neck, NY1,2934314.0%
      Halesite, NY2,4834314.0%
      Kings Park, NY16,1534314.0%
      West Hills, NY5,2254314.0%
      Brightwaters, NY3,0704314.0%
      Great River, NY1,9614314.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Breckinridge Center, KY1,9614510.0%
      Questa, NM1,9611570.0%
      Clinton, NY1,9612746.0%
      New Berlinville, PA1,9614216.0%
      Dennis, MA1,9623628.0%
      Great River, NY1,9614314.0%
      Source: The Great River, 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.