West Islip, NY Weather - Forecast & Monthly Averages

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Weather Quick Facts

The highest monthly average temperature in West Islip for August is 74.8 degrees
The lowest monthly average temperature in West Islip for February is 30.8 degrees
The most monthly precipitation in West Islip occurs in October with 16.3 inches
The air quality index in West Islip is 2% worse than the national average
The pollution index in West Islip is 1338% worse than the national average

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West Islip Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	26°F	41°F	33°F	4.6"
February	24°F	39°F	31°F	3.2"
March	30°F	47°F	38°F	6.5"
April	41°F	59°F	49°F	10.8"
May	50°F	68°F	58°F	3.5"
June	62°F	78°F	69°F	6.0"
July	67°F	82°F	74°F	8.7"
August	67°F	83°F	75°F	6.0"
September	61°F	79°F	69°F	4.2"
October	52°F	68°F	59°F	16.3"
November	39°F	55°F	47°F	5.8"
December	30°F	43°F	36°F	5.8"

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West Islip 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.
Index	West Islip	New York	National
Air quality index	43	43	42
Pollution index	39,208,800	6,179,275	2,726,193

West Islip air quality information

Measurement	Total
Days measured	365
Days with good air quality	262
Days with moderate air quality	82
Days w/ poor A.Q. for sensitive groups	18
Days with unhealthy air quality	3

West Islip air quality information

Pollutant	Total
Arsenic	0.060%
Benzene	0.320%
Carbon Tetrachloride	0.020%
Lead	0.320%
Mercury	0.130%

Average monthly West Islip temperature with heat index

West Islip monthly precipitation with daily maximum

West Islip monthly snow depth with daily maximum

West Islip monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
East Islip, NY	12,722	43	14.0%
Islip Terrace, NY	5,244	43	14.0%
West Sayville, NY	4,956	43	14.0%
Farmingville, NY	16,705	43	14.0%
Islandia, NY	3,315	43	14.0%
West Islip, NY	26,614	43	14.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Alvin, TX	26,592	52	4.0%
Daphne, AL	26,578	37	26.0%
Garden City, MI	26,565	56	12.0%
Brownsburg, IN	26,560	54	8.0%
Wooster, OH	26,557	43	14.0%
West Islip, NY	26,614	43	14.0%

Source: The West Islip, 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.