September weather forecast
Dorset, VT

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Weather in September

September marks the arrival of fall in Dorset with noticeable changes in weather and scenery. The dramatic transformation in landscapes from brilliant green to warm reds and oranges is a sight to behold. Temperatures start to decrease and daylight hours drop to 12.5, stretching the cool, pleasing evenings. However, the weather remains generally mild, enjoyable for outdoor activities such as hiking or apple picking. By the end of the month, the signs of the upcoming winter start to appear.

Temperature

As August transitions into September, Dorset sees a gentle drop in the average high-temperature, transitioning from a moderately hot 75.7°F (24.3°C) to a pleasant 68.4°F (20.2°C). Throughout September, the average low-temperature in Dorset records at a frosty 48.9°F (9.4°C).

Humidity

In Dorset, the average relative humidity in September is 81%.

Rainfall

The months with the least rainfall are January, March and September Rain falls for 14.5 days and accumulates 2.64" (67mm) of rain.

Snowfall

In Dorset, snow does not fall in June through September.

Daylight

In September, the average length of the day is 12h and 29min.
On the first day of September, sunrise is at 6:17 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:34 pm EDT.

Sunshine

In September, the average sunshine in Dorset is 7.9h.

UV index

In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 3 during September morphs into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. To protect against the Sun's most potent rays, avoid direct exposure around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

In September, in Dorset, the average high-temperature is 68.4°F (20.2°C), and the average low-temperature is 48.9°F (9.4°C).

What is the average humidity in September?

The average relative humidity in September is 81%.

What is the driest month in Dorset?

The months with the least rainfall are January, March and September Rain falls for 14.5 days and accumulates 2.64" (67mm) of rain.

How many days does it rain in September?

In Dorset, during September, the rain falls for 14.5 days and regularly aggregates up to 2.64" (67mm) of precipitation.

When it does not snow?

In Dorset, snow does not fall in June through September.

Does it snow in September?

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

What is the average length of the day in September?

In Dorset, the average day length in September is 12h and 29min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:17 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:34 pm EDT.

How long on average sun shines in September?

In Dorset, Vermont, the average sunshine duration in September is 7.9h.

What is the UV index intensity in September?

In Dorset, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
Dorset, VT

Average temperature in September - Dorset, VT
  • Average high temperature in September: 68.4°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (24.4°F).

  • Average low temperature in September: 48.9°F

The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

Average pressure in September
Dorset, VT

Average pressure in September - Dorset, 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
Dorset, VT

Average wind speed in September - Dorset, VT
  • Average wind speed in September: 5.4mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in September
Dorset, VT

Average humidity in September - Dorset, VT
  • Average humidity in September: 81%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (77%).

Average rainfall in September
Dorset, VT

Average rainfall in September - Dorset, VT
  • Average rainfall in September: 2.64"

The wettest month (with the highest rainfall) is June (3.62").
The driest months (with the least rainfall) are January, March and September (2.64").

Average rainfall days in September
Dorset, VT

Average rainfall days in September - Dorset, VT
  • Average rainfall days in September: 14.5 days

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is February (5.5 days).

Average snowfall in September
Dorset, VT

Average snowfall in September - Dorset, VT
  • Average snowfall in September: 0"

The month with the highest snowfall is February (15.87").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Dorset, VT

Average snowfall days in September - Dorset, VT
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Dorset, VT

Average daylight in September / Average sunshine in September - Dorset, 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 0min).

  • Average sunshine in September: 7h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).

Average sunshine days in September
Dorset, VT

Average sunshine days in September - Dorset, VT
  • Average sunshine days in September: 12.6 days

The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is February (8.9 days).

Average UV index in September
Dorset, VT

Average UV index in September - Dorset, 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, February and December (UV index 1).

Average cloud cover in September
Dorset, VT

Average cloud cover in September - Dorset, VT
  • Average cloud cover in September: 44

The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 40).

Average visibility in September
Dorset, VT

Average visibility in September - Dorset, VT
  • Average visibility in September: 4mi

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

Dorset, Vermont, USA

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