TODAY DEC23
TEMPERATURE15
HUMIDITY61
PRESSURE103520
WIND COND.360 11.2
  • 3125Mon
  • 4024Tue40%
  • 3524
  • 3927Thu
  • 4028Fri
daynightWeather update from Islip, Long Island Mac Arthur Airport at
New Real Estate Listings in Stony Brook Area
Search Homes for Sale in Stony Brook, NY

Weather Quick Facts

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

Compare Stony Brook, NY Weather

      vs
      How would you rate the weather in Stony Brook?
      Write a review to give others more information about this area.
      How would you rate the air quality in Stony Brook?
      Write a review to give others more information about this area.
      See all Stony Brook poll results

      Stony Brook 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"

      Stony Brook 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.
      IndexStony BrookNew YorkNational
      Air quality index434342
      Pollution index39,208,8006,179,2752,726,193

      Stony Brook 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 Stony Brook temperature with heat index

      Stony Brook monthly precipitation with daily maximum

      Stony Brook monthly snow depth with daily maximum

      Stony Brook monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Commack, NY36,9034314.0%
      Fort Salonga, NY9,9304314.0%
      Huntington Bay, NY1,6144314.0%
      South Huntington, NY10,1864314.0%
      Brightwaters, NY3,0704314.0%
      Stony Brook, NY11,7854314.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Red Bank, TN11,785468.0%
      Madison, IN11,7833530.0%
      Richfield, WI11,7824412.0%
      North Wantagh, NY11,792512.0%
      North Dundas, ON11,794n/a 
      Stony Brook, NY11,7854314.0%
      Source: The Stony Brook, 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.