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
A minor decrease in the average high-temperature is observed during September, shifting from a moderately hot 74.8°F (23.8°C) in August to an enjoyable 67.8°F (19.9°C). The temperature lowers to an average of 48°F (8.9°C) during September nights.Humidity
The average relative humidity in September is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 14.5 days and typically collects 1.97" (50mm) of precipitation.Snowfall
In Wilmington, snow does not fall in June through September.Daylight
In Wilmington, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:37 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September in Wilmington?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Wilmington have in September?
When is the sunrise / sunset in September in Wilmington?
How many hours of sunshine does Wilmington have in September?
What is the UV index reading in September?
Average temperature in September
Wilmington, NY
- Average high temperature in September: 67.8°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in September: 48°F
The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure in September
Wilmington, NY
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Wilmington, NY
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Wilmington, NY
- Average humidity in September: 80%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Wilmington, NY
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in September
Wilmington, NY
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is June (19.2 days).
The month with the least rainy days is February (8.4 days).
Average snowfall in September
Wilmington, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (12.48").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Wilmington, NY
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (21.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Wilmington, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in September
Wilmington, NY
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is September (13.5 days).
The month with the least sunshine days is February (5.6 days).
Average UV index in September
Wilmington, NY
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, March and December (UV index 1).
Average cloud cover in September
Wilmington, NY
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in September
Wilmington, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
Wilmington, New York, USA
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