Port Jefferson Station, NY Weather - Forecast & Monthly Averages

TEMPERATURE	21
HUMIDITY	54
PRESSURE	102340
WIND COND.	310 18.4

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Weather Quick Facts

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

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

Port Jefferson Station air quality

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

Air quality details

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

Average monthly Port Jefferson Station temperature with heat index

Port Jefferson Station monthly precipitation with daily maximum

Port Jefferson Station monthly snow depth with daily maximum

Port Jefferson Station monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Bayport, NY	8,584	43	14.0%
Brentwood, NY	62,743	43	14.0%
Holbrook, NY	25,794	43	14.0%
Ronkonkoma, NY	18,953	43	14.0%
East Shoreham, NY	7,090	43	14.0%
Port Jefferson Station, NY	7,516	43	14.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Galliano, LA	7,514	41	18.0%
Strathmore, NJ	7,514	51	2.0%
Auburn, GA	7,519	37	26.0%
Meridianville, AL	7,520	44	12.0%
Williamsburg, FL	7,520	39	22.0%
Port Jefferson Station, NY	7,516	43	14.0%

Source: The Port Jefferson Station, 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.