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 modest decline in the average high-temperature is seen during September, decreasing from a moderately hot 75.4°F (24.1°C) in August to a pleasant 68°F (20°C). During the nights in September, Wilmington experiences a consistent average temperature of 49.3°F (9.6°C).Humidity
In September, the average relative humidity is 81%.Rainfall
In Wilmington, in September, it is raining for 12.7 days, with typically 1.89" (48mm) of accumulated precipitation. In Wilmington, during the entire year, the rain falls for 143.7 days and collects up to 25.75" (654mm) of precipitation.Snowfall
June through September are months without snowfall in Wilmington.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September, sunrise is at 6:16 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:34 pm EDT.
Sunshine
The average sunshine in September is 7.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 3 suggests these recommendations:
Guard yourself - Avoiding sunburn is suggested. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Wilmington in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in Wilmington?
Does it snow in September?
How many hours of daylight does Wilmington have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Wilmington have in September?
What is the UV index reading in September?
Average temperature in September
Wilmington, VT
- Average high temperature in September: 68°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (25.7°F).
- Average low temperature in September: 49.3°F
The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in September
Wilmington, VT
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Wilmington, VT
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January and February (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Wilmington, VT
- Average humidity in September: 81%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Wilmington, VT
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is October (2.52").
The driest month (with the least rainfall) is March (1.65").
Average rainfall days in September
Wilmington, VT
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in September
Wilmington, VT
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Wilmington, VT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.9 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, VT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Wilmington, VT
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is November (17.5 days).
The months with the least sunshine days are June and July (11.7 days).
Average UV index in September
Wilmington, VT
- 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 February and December (UV index 1).
Average cloud cover in September
Wilmington, VT
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Wilmington, VT
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Wilmington, Vermont, USA
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