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
In the transition to September, South Hero observes a minor drop in the average high-temperature, shifting from a warm 75.9°F (24.4°C) in August to an agreeable 69.1°F (20.6°C). During the month of September, South Hero's nighttime temperature lowers to an average of 50.2°F (10.1°C).Humidity
The average relative humidity in September is 78%.Rainfall
In September, the rain falls for 13.5 days. Throughout September, 1.89" (48mm) of precipitation is accumulated. In South Hero, during the entire year, the rain falls for 175.6 days and collects up to 29.09" (739mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:50 am and sunset at 6:35 pm EDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In South Hero, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for South Hero in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does South Hero have in September?
What is the UV index intensity in September?
Average temperature in September
South Hero, VT
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (24.6°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
South Hero, VT
- 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
South Hero, VT
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
South Hero, VT
- Average humidity in September: 78%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in September
South Hero, VT
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days in September
South Hero, VT
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is June (19.5 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in September
South Hero, 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
South Hero, VT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
South Hero, VT
- 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: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in September
South Hero, VT
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is September (14.1 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in September
South Hero, 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 January and December (UV index 1).
Average cloud cover in September
South Hero, VT
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
South Hero, VT
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July and August (6mi).
The months with the lowest visibility are January and February (4mi).
South Hero, Vermont, USA
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