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 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
With October's arrival, Port Jefferson sees a decrease in average high-temperatures, moving from a moderately hot 73.6°F (23.1°C) in September to a comfortable 61.7°F (16.5°C). In the month of October, Port Jefferson experiences an average low-temperature of 46°F (7.8°C).Humidity
The least humid month is October, with an average relative humidity of 75%.Rainfall
In Port Jefferson, during October, the rain falls for 7.9 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, there are 111.7 rainfall days, and 8.58" (218mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 27.1 snowfall days, and 2.8" (71mm) of snow is accumulated.Daylight
The average length of the day in October is 11h and 7min.On the first day of the month, sunrise is at 7:33 am and sunset at 7:18 pm. On the last day of October, sunrise is at 8:05 am and sunset at 6:34 pm EDT.
Sunshine
In Port Jefferson, the average sunshine in October is 6.3h.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 2 during October translates into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October?
What is the least humid month?
What is the average humidity in October?
How many days does it rain in October?
When does it start to snow?
What is the average length of the day in October?
When are sunrise and sunset in October?
How many hours of sunshine does Port Jefferson have in October?
When is the lowest UV index?
What is the UV index intensity in October?
Average temperature in October
Port Jefferson, OH
- Average high temperature in October: 61.7°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in October: 46°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in October
Port Jefferson, OH
- Average pressure in October: 30.03"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in October
Port Jefferson, OH
- Average wind speed in October: 8.6mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in October
Port Jefferson, OH
- Average humidity in October: 75%
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (75%).
Average rainfall in October
Port Jefferson, OH
- Average rainfall in October: 0.63"
The wettest months (with the highest rainfall) are May and June (1.06").
The driest month (with the least rainfall) is November (0.47").
Average rainfall days in October
Port Jefferson, OH
- Average rainfall days in October: 7.9 days
The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is February (5 days).
Average snowfall in October
Port Jefferson, OH
- Average snowfall in October: 0.12"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Port Jefferson, OH
- Average snowfall days in October: 0.4 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Port Jefferson, OH
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in October: 6h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in October
Port Jefferson, OH
- Average sunshine days in October: 19.9 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in October
Port Jefferson, OH
- Average UV index in October: 2
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, October, November and December (UV index 2).
Average cloud cover in October
Port Jefferson, OH
- Average cloud cover in October: 40
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in October
Port Jefferson, OH
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
Port Jefferson, Ohio, USA
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