Islip, NY Weather - Forecast & Monthly Averages

TEMPERATURE	51
HUMIDITY	96
PRESSURE	101390
WIND COND.	220 9.4

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Weather Quick Facts

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

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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	24°F	41°F	32°F	4.0"
February	24°F	43°F	33°F	3.0"
March	31°F	50°F	40°F	4.2"
April	41°F	61°F	50°F	3.5"
May	51°F	71°F	60°F	3.6"
June	60°F	79°F	69°F	4.7"
July	68°F	85°F	76°F	3.1"
August	65°F	83°F	74°F	5.6"
September	60°F	78°F	68°F	3.1"
October	49°F	67°F	58°F	4.1"
November	37°F	56°F	46°F	3.0"
December	31°F	47°F	39°F	4.9"

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

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

Islip air quality information

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

Average monthly Islip temperature with heat index

Islip monthly precipitation with daily maximum

Islip monthly snow depth with daily maximum

Islip monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Bellport, NY	1,899	43	14.0%
Central Islip, NY	33,591	43	14.0%
North Bellport, NY	10,468	43	14.0%
Sayville, NY	15,910	43	14.0%
Rocky Point, NY	13,138	43	14.0%
Islip, NY	16,965	43	14.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Phoenixville, PA	16,961	51	2.0%
Edmundston, NB	16,970	n/a
Ojus, FL	16,972	41	18.0%
Poplar Bluff, MO	16,979	26	48.0%
La Marque, TX	16,983	52	4.0%
Islip, NY	16,965	43	14.0%

Source: The 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.