September weather forecast
Killington, VT

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Weather in September

September sees a considerable shift in weather as the peak summer fades into the welcoming arms of fall. Temperatures begin to descend towards a more comfortable 68.4°F (20.2°C), moving away from the August highs. The reduction of daylight hours becomes much more noticeable, signaling the slow approach of winter. With the absence of snowfall and reduced rainfall, September paves the way for crisp autumnal vistas. The weather in this month paints vivid images of fiery fall foliage, providing a dramatic backdrop for locals and tourists alike.

Temperature

The start of September comes with a small reduction in the average high-temperature, subtly receding from a warm 75.7°F (24.3°C) in August to an agreeable 68.4°F (20.2°C). Killington observes an average nighttime low-temperature of 48.2°F (9°C) during the month of September.

Humidity

The average relative humidity in September in Killington is 80%.

Rainfall

The month with the least rainfall in Killington, Vermont, is September, when the rain falls for 12.5 days and typically collects 1.81" (46mm) of precipitation.

Snowfall

In Killington, Vermont, snow does not fall in June through September.

Daylight

In Killington, the average length of the day in September is 12h and 29min.
On the first day of September, sunrise is at 6:15 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:33 pm EDT.

Sunshine

In Killington, the average sunshine in September is 8.3h.

UV index

In Killington, Vermont, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index, 3 during September, leads to the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Around midday, solar radiation is most harmful; hence, exposure should be limited. Enhance your sun protection with tightly woven, yet airy clothing.
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Frequently asked questions

What is the usual temperature for Killington in September?

In September, in Killington, the average high-temperature is 68.4°F (20.2°C), and the average low-temperature is 48.2°F (9°C).

What is the average humidity in September in Killington?

In Killington, the average relative humidity in September is 80%.

What is the driest month in Killington?

September is the month with the least rainfall in Killington. Rain falls for 12.5 days and accumulates 1.81" (46mm) of precipitation.

How many days does it rain in September in Killington?

In Killington, Vermont, during September, the rain falls for 12.5 days and regularly aggregates up to 1.81" (46mm) of precipitation.

When it does not snow in Killington?

June through September are months without snowfall in Killington.

Does it snow in Killington in September?

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

What is the average length of the day in September in Killington?

The average day length in September in Killington is 12h and 29min.

When are sunrise and sunset in September in Killington?

On the first day of September, sunrise is at 6:15 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:33 pm EDT.

How long on average sun shines in September in Killington?

In Killington, the average sunshine duration in September is 8.3h.

What is the UV index reading in September in Killington?

In Killington, Vermont, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's 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
Killington, VT

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

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in September: 48.2°F

The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

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Average pressure in September
Killington, VT

Average pressure in September - Killington, 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 (29.91"Hg).

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Average wind speed in September
Killington, VT

Average wind speed in September - Killington, VT
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in September
Killington, VT

Average humidity in September - Killington, VT
  • Average humidity in September: 80%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (76%).

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Average rainfall in September
Killington, VT

Average rainfall in September - Killington, VT
  • Average rainfall in September: 1.81"

The wettest month (with the highest rainfall) is October (2.99").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in September
Killington, VT

Average rainfall days in September - Killington, VT
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (7.3 days).

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Average snowfall in September
Killington, VT

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

The month with the highest snowfall is February (12.99").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Killington, VT

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

The month with the highest number of snowfall days is February (19.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Killington, VT
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in September: 8h and 2min

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

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Average sunshine days in September
Killington, VT

Average sunshine days in September - Killington, VT
  • Average sunshine days in September: 15.3 days

The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (7.8 days).

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Average UV index in September
Killington, VT

Average UV index in September - Killington, 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).

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Average cloud cover in September
Killington, VT

Average cloud cover in September - Killington, VT
  • Average cloud cover in September: 41

The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 37).

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Average visibility in September
Killington, VT

Average visibility in September - Killington, VT
  • Average visibility in September: 5mi

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

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Killington, Vermont, USA

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