Point Forecast: Islip, Long Island Mac Arthur Airport NY
 40.81N 73.11W (Elev. 30 m)
Last Update: 3:16 pm EDT Jul 15, 2025
Tabular Forecast
[hide menu]Get as XML
Weather ElementsWeather/PrecipitationAviation Weather
Temperature (°C)
Dewpoint (°C)
Heat Index (°C)

Surface Wind  
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)
Rain
Thunder
Fog
Ceiling Height
Visibility

48-Hour Period Starting:       Back 2 Days  

Date07/16
Hour (EDT)000102030405060708091011121314151617181920212223
Temperature (°C)242424242424232425272829293030303130292826272626
Dewpoint (°C)232323232323232424242423232324232323232423242424
Heat Index (°C)2424242424242425293233333435343434343226292626
Surface Wind (mph)2222221122367810101010101010988
Wind DirSWSWSWSWSWSSWSWSWSSSSSSSSSSSSSWSWSW
Gust
Sky Cover (%)513948465652504553482631363344473244485977828792
Precipitation Potential (%)0000000044466677710101038383838
Relative Humidity (%)9494949797971009794857972726870686368707785859091
Rain----------------------------------------ChcChcChcChc
Thunder----------------------------------------ChcChcChcChc

Date07/17
Hour (EDT)000102030405060708091011121314151617181920212223
Temperature (°C)262625242424252526262728282930313131302928282727
Dewpoint (°C)242424242424242424242424242424242424242423232424
Heat Index (°C)262625242424252526263132333436373737353432313129
Surface Wind (mph)888888899101113141515151514131110999
Wind DirSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSW
Gust
Sky Cover (%)919190898988847975716763636464646464646446434138
Precipitation Potential (%)383846464646464648484848484864646464646412121212
Relative Humidity (%)929394959797949494918582807572707070707274778285
RainChcChcChcChcChcChcChcChcChcChcChcChcChcChcLklyLklyLklyLklyLklyLkly--------
ThunderChcChcSChcSChcSChcSChcSChcSChcSChcSChcSChcSChcSChcSChcChcChcChcChcChcChc--------

Additional Forecasts and Information
English UnitsForecast Discussion
7-Day ForecastHourly Weather Graph
Hazardous WeatherRegional Weather Conditions
Local ClimateGraphical Forecast Maps
Home