Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average sea temperature in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
Stony Brook in October demonstrates a small temperature transition, adjusting from an average high of an agreeable 72.3°F (22.4°C) in September to a comfortable 62.6°F (17°C). A slight dip in temperature to a moderate 55.4°F (13°C) marks the average nights during October.Humidity
In October, the average relative humidity is 72%.Rainfall
In Stony Brook, in October, it is raining for 13.1 days, with typically 3.27" (83mm) of accumulated precipitation. In Stony Brook, during the entire year, the rain falls for 146.8 days and collects up to 33.78" (858mm) of precipitation.Snowfall
January through March, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.2" (5mm) of snow. In Stony Brook, New York, during the entire year, snow falls for 12.6 days and aggregates up to 5.59" (142mm) of snow.Ocean temperature
In October, the average ocean temperature is 63.7°F (17.6°C).Note: In water with a temperature of 63.7°F (17.6°C), most individuals do not find swimming enjoyable. As the temperature falls from 69.8°F (21°C) to 59°F (15°C), breathing control becomes more difficult.
Daylight
In Stony Brook, the average length of the day in October is 11h and 6min.On the first day of the month, sunrise is at 6:49 am and sunset at 6:34 pm. On the last day of October, sunrise is at 7:22 am and sunset at 5:49 pm EDT.
Sunshine
In Stony Brook, the average sunshine in October is 5.9h.UV index
In Stony Brook, the average daily maximum UV index in October is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 during October translates into the following directions:
Act with care - The need to guard against sun damage is communicated. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October?
What is the average humidity in October?
How many days does it rain in October?
When does it start snowing?
What is the ocean temperature in October?
What is the average length of the day in October?
What time are sunrise and sunset in October?
How many hours of sunshine does Stony Brook have in October?
What is the UV index reading in October?
Average temperature in October
Stony Brook, NY
- Average high temperature in October: 62.6°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in October: 55.4°F
The months with the highest average low temperature are July and August (71.1°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in October
Stony Brook, NY
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in October
Stony Brook, NY
- Average wind speed in October: 11.7mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity in October
Stony Brook, NY
- Average humidity in October: 72%
The months with the highest relative humidity are May and June (77%).
The month with the lowest relative humidity is November (71%).
Average rainfall in October
Stony Brook, NY
- Average rainfall in October: 3.27"
The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in October
Stony Brook, NY
- Average rainfall days in October: 13.1 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in October
Stony Brook, NY
- Average snowfall in October: 0.2"
The month with the highest snowfall is March (2.13").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in October
Stony Brook, NY
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in October
Stony Brook, NY
- Average sea temperature in October: 63.7°F
The best month for swimming (with the highest average sea temperature) is August (74°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).
Average daylight in October /
Average sunshine in October
Stony Brook, NY
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in October: 5h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in October
Stony Brook, NY
- Average sunshine days in October: 17 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (13 days).
Average UV index in October
Stony Brook, NY
- Average UV index in October: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in October
Stony Brook, NY
- Average cloud cover in October: 41
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in October
Stony Brook, NY
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Stony Brook, New York, USA
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