Stony Brook Weather History New York, United States of America

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Daily and hourly data from 1 Jan 2009 onwards.
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Thu 14 May, 2026 Weather in Stony Brook

Sunrise: 05:36 AM Sunset: 08:03 PM	Moonrise: 03:52 AM Moonset: 05:47 PM	Max: 15.6 °c	Min: 11.8 °c	Avg: 13.3 °c	Precip: 4.50 mm	Max Wind: 20.2 kph

	Thu 14 0:00 am	Thu 14 3:00 am	Thu 14 6:00 am	Thu 14 9:00 am	Thu 14 12:00 pm	Thu 14 3:00 pm	Thu 14 6:00 pm	Thu 14 9:00 pm
Icon
Temp	13.4°c	12.5°c	12.2°c	12.5°c	13.7°c	15.2°c	13.9°c	12.8°c
Wind	18.4 kmph	10.4 kmph	9.7 kmph	7.9 kmph	11.9 kmph	6.5 kmph	8.6 kmph	17.3 kmph
Precip	0.00 mm	0.40 mm	0.00 mm	1.40 mm	0.30 mm	0.10 mm	0.50 mm	0.00 mm
Cloud	100%	98%	100%	100%	77%	59%	74%	80%
Humidity	81%	94%	98%	97%	92%	91%	85%	84%
Pressure	1011 mb	1009 mb	1007 mb	1007 mb	1006 mb	1005 mb	1004 mb	1006 mb

Stony Brook Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	3°C / 38°F	-2°C / 29°F	1°C / 34°F	179 hours	108.02 mm / 4.25 In	7 days	1017 mb / 31 In
February	4°C / 39°F	-1°C / 30°F	1°C / 34°F	151 hours	124.35 mm / 4.90 In	7 days	1017 mb / 31 In
March	7°C / 45°F	2°C / 36°F	5°C / 40°F	165 hours	139.36 mm / 5.49 In	7 days	1017 mb / 31 In
April	12°C / 54°F	7°C / 44°F	10°C / 49°F	165 hours	119.64 mm / 4.71 In	7 days	1016 mb / 30 In
May	18°C / 64°F	12°C / 54°F	15°C / 58°F	194 hours	123.86 mm / 4.88 In	8 days	1016 mb / 30 In
June	23°C / 73°F	17°C / 63°F	20°C / 68°F	210 hours	116.34 mm / 4.58 In	7 days	1014 mb / 30 In
July	27°C / 80°F	22°C / 71°F	24°C / 75°F	235 hours	138.74 mm / 5.46 In	7 days	1014 mb / 30 In
August	26°C / 79°F	21°C / 71°F	24°C / 75°F	236 hours	121.12 mm / 4.77 In	7 days	1015 mb / 30 In
September	23°C / 73°F	18°C / 65°F	20°C / 69°F	210 hours	116.97 mm / 4.61 In	6 days	1018 mb / 31 In
October	17°C / 63°F	13°C / 55°F	15°C / 59°F	179 hours	145.35 mm / 5.72 In	7 days	1017 mb / 31 In
November	12°C / 53°F	7°C / 44°F	9°C / 49°F	198 hours	108.49 mm / 4.27 In	6 days	1019 mb / 31 In
December	7°C / 44°F	2°C / 36°F	5°C / 40°F	162 hours	167.92 mm / 6.61 In	7 days	1018 mb / 31 In

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