September weather forecast
South Burlington, VT

englishespañol中文
Share

Weather in September

As summer fades and autumn ushers in, South Burlington's weather in September takes a slight turn for the cooler. The high temperature dwindles, oscillating between 49.3°F (9.6°C) and 69.1°F (20.6°C). The town witnesses a drop in daylight hours, retreated to a more manageable 12.5 hours. Despite the decline in temperature, the prevalence of sunshine remains high, with 8.9 hours recorded. South Burlington commences autumn with a crisp touch of coolness and slightly less humidity.

Temperature

The arrival of September signals a subtle shift in temperature, down from a warm 76.6°F (24.8°C) in August to an agreeable 69.1°F (20.6°C). South Burlington experiences an average low-temperature of 49.3°F (9.6°C) in the month of September.

Humidity

In South Burlington, the average relative humidity in September is 78%.

Rainfall

In September, the rain falls for 11.3 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. Throughout the year, there are 153.4 rainfall days, and 17.01" (432mm) of precipitation is accumulated.

Snowfall

In South Burlington, snow does not fall in June through September.

Daylight

In September, the average length of the day is 12h and 30min.
On the first day of September, sunrise is at 6:16 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:34 pm EDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: An average UV index of 3 in September transforms into this advice:
Undertake protective steps - Preventing sun damage is advised. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

Frequently asked questions

What is the average September temperature?

An average high-temperature, in September, in South Burlington, is 69.1°F (20.6°C) and the average low-temperature is 49.3°F (9.6°C).

What is the average humidity in September?

The average relative humidity in September in South Burlington is 78%.

How much does it rain in September?

In South Burlington, in September, during 11.3 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In South Burlington, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

In South Burlington, the average day length in September is 12h and 30min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:16 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:34 pm EDT.

How many hours of sunshine does South Burlington have in September?

In September, the average sunshine duration is 8.9h.

How high is the UV index in September?

In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
South Burlington, VT

Average temperature in September - South Burlington, 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: 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 (12.4°F).

Average pressure in September
South Burlington, VT

Average pressure in September - South Burlington, VT
  • Average pressure in September: 30.05"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 Burlington, VT

Average wind speed in September - South Burlington, VT
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in September
South Burlington, VT

Average humidity in September - South Burlington, VT
  • Average humidity in September: 78%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is May (75%).

Average rainfall in September
South Burlington, VT

Average rainfall in September - South Burlington, VT
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is June (2.09").
The driest month (with the least rainfall) is February (0.87").

Average rainfall days in September
South Burlington, VT

Average rainfall days in September - South Burlington, VT
  • Average rainfall days in September: 11.3 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is January (7.4 days).

Average snowfall in September
South Burlington, VT

Average snowfall in September - South Burlington, VT
  • Average snowfall in September: 0"

The month with the highest snowfall is January (5.16").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
South Burlington, VT

Average snowfall days in September - South Burlington, VT
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (19.8 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 Burlington, VT

Average daylight in September / Average sunshine in September - South Burlington, 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: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 3h and 0min).

Average sunshine days in September
South Burlington, VT

Average sunshine days in September - South Burlington, VT
  • Average sunshine days in September: 16.4 days

The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is February (7.3 days).

Average UV index in September
South Burlington, VT

Average UV index in September - South Burlington, VT
  • 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
South Burlington, VT

Average cloud cover in September - South Burlington, VT
  • Average cloud cover in September: 35

The month with the most cloud cover is February (Cloud cover 70).
The months with the least cloud cover are July, August and September (Cloud cover 35).

Average visibility in September
South Burlington, VT

Average visibility in September - South Burlington, VT
  • Average visibility in September: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).

South Burlington, Vermont, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location