Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
A moderate decline in average high-temperatures is noted in September, moving from a warm 79.2°F (26.2°C) in August to a pleasant 72.5°F (22.5°C). In September, a low-temperature average of 64.2°F (17.9°C) is characteristic of Northport, marking a minor shift from daytime temperatures.Humidity
In Northport, the average relative humidity in September is 73%.Rainfall
In Northport, during September, the rain falls for 12.8 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 152.5 rainfall days, and 35.04" (890mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Ocean temperature
In Northport, New York, the average seawater temperature in September is 69.6°F (20.9°C).Note: For most, swimming in 69.6°F (20.9°C) is not a pleasant activity. Breathing becomes increasingly challenging as water temperature descends from 69.8°F (21°C) to 59°F (15°C).
Daylight
In Northport, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:25 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:36 pm EDT.
Sunshine
The average sunshine in September in Northport is 9h.UV index
In Northport, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, an average UV index of 5 transforms into the following instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What are September temperatures in Northport?
What is the average humidity in September in Northport?
How many days does it rain in September in Northport?
When it does not snow in Northport?
What is the ocean temperature in September in Northport?
What is the average length of the day in September in Northport?
When are sunrise and sunset in September in Northport?
How many hours of sunshine does Northport have in September?
How high is the UV index in September in Northport?
Average temperature in September
Northport, NY
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in September: 64.2°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in September
Northport, NY
- Average pressure in September: 30.05"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 September
Northport, NY
- Average wind speed in September: 9.1mph
The windiest month (with the highest average wind speed) is January (12.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in September
Northport, NY
- Average humidity in September: 73%
The months with the highest relative humidity are May and June (76%).
The month with the lowest relative humidity is November (71%).
Average rainfall in September
Northport, NY
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is July (4.09").
The driest month (with the least rainfall) is January (2.09").
Average rainfall days in September
Northport, NY
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Northport, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Northport, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Northport, NY
- Average sea temperature in September: 69.6°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 September /
Average sunshine in September
Northport, NY
- Average daylight in September: 12h and 3min
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 September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Northport, NY
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in September
Northport, NY
- Average UV index in September: 5
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 September
Northport, NY
- Average cloud cover in September: 33
The month with the most cloud cover is December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in September
Northport, NY
- Average visibility in September: 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).
Northport, New York, USA
Weather forecast for your location
2. Allow the app to use your location
