Stony Brook, NY Weather - Forecast & Monthly Averages

TEMPERATURE	47
HUMIDITY	93
PRESSURE	101630
WIND COND.

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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

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

Stony Brook 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

Stony Brook air quality information

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

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

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%
Gordon Heights, NY	4,179	43	14.0%
Stony Brook, NY	11,785	43	14.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Red Bank, TN	11,785	46	8.0%
Madison, IN	11,783	35	30.0%
Richfield, WI	11,782	44	12.0%
North Wantagh, NY	11,792	51	2.0%
North Dundas, ON	11,794	n/a
Stony Brook, NY	11,785	43	14.0%

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.