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 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
The start of September signals a gentle decrease in the average high-temperature, transitioning from a warm 77.5°F (25.3°C) in August to an agreeable 70.7°F (21.5°C). In September, the nighttime temperature lowers to an average of 50.4°F (10.2°C).Humidity
In Southport, the average relative humidity in September is 80%.Rainfall
In Southport, New York, in September, it is raining for 13.6 days, with typically 2.13" (54mm) of accumulated precipitation. In Southport, during the entire year, the rain falls for 172.7 days and collects up to 29.57" (751mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:50 pm EDT.
Sunshine
In Southport, the average sunshine in September is 8.6h.UV index
In Southport, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 3 in September leads to these recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in Southport in September?
How many hours of daylight does Southport have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Southport have in September?
How high is the UV index in September?
Average temperature in September
Southport, NY
- Average high temperature in September: 70.7°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 (28.8°F).
- Average low temperature in September: 50.4°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in September
Southport, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Southport, NY
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Southport, NY
- Average humidity in September: 80%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, May, June and July (78%).
Average rainfall in September
Southport, NY
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is April (3.07").
The driest months (with the least rainfall) are January and November (1.89").
Average rainfall days in September
Southport, NY
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in September
Southport, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (8.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Southport, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Southport, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).
Average sunshine days in September
Southport, NY
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in September
Southport, NY
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Southport, NY
- Average cloud cover in September: 40
The months with the most cloud cover are January and February (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in September
Southport, NY
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Southport, New York, USA
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