September weather forecast
East Calais, VT

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Weather in September

The first month of the autumn, September, is still a comfortable month in East Calais, Vermont, with an average temperature ranging between max 67.5°F (19.7°C) and min 48.2°F (9°C).

Temperature

September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a warm 74.3°F (23.5°C) in August to a comfortable 67.5°F (19.7°C). Throughout the month of September, the nighttime temperature in East Calais dips to an average of 48.2°F (9°C).

Humidity

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

Rainfall

The month with the least rainfall is September, when the rain falls for 6 days and typically collects 0.31" (8mm) of precipitation.

Snowfall

June through September are months without snowfall in East Calais.

Daylight

In East Calais, the average length of the day in September is 12h and 30min.
On the first day of the month, sunrise is at 6:13 am and sunset at 7:25 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:31 pm EDT.

Sunshine

In September, the average sunshine in East Calais, Vermont, is 8.1h.

UV index

The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, a daily UV index of 3 turns into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

What is the temperature in September in East Calais?

The average high-temperature, in September, in East Calais, is 67.5°F (19.7°C), while the average low-temperature is 48.2°F (9°C).

What is the average humidity in September in East Calais?

The average relative humidity in September in East Calais is 81%.

What is the driest month in East Calais?

The month with the least rainfall in East Calais is September, when the rain falls for 6 days and typically collects 0.31" (8mm) of precipitation.

How much does it rain in East Calais in September?

In East Calais, Vermont, in September, during 6 rainfall days, 0.31" (8mm) of precipitation is typically accumulated.

When it does not snow in East Calais?

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

Does it snow in East Calais in September?

In East Calais, Vermont, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does East Calais have in September?

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

When is the sunrise / sunset in September in East Calais?

On the first day of September, sunrise is at 6:13 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:31 pm EDT.

How many hours of sunshine does East Calais have in September?

In East Calais, the average sunshine duration in September is 8.1h.

What is the UV index reading in September in East Calais?

The average daily maximum UV index in September in East Calais, Vermont, is 3. A UV Index estimate of 3 to 5 represents a moderate health threat 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
East Calais, VT

Average temperature in September - East Calais, VT
  • Average high temperature in September: 67.5°F

The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (22.6°F).

  • Average low temperature in September: 48.2°F

The month with the highest average low temperature is July (55.8°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).

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Average pressure in September
East Calais, VT

Average pressure in September - East Calais, 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).

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Average wind speed in September
East Calais, VT

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

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in September
East Calais, VT

Average humidity in September - East Calais, VT
  • Average humidity in September: 81%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (77%).

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Average rainfall in September
East Calais, VT

Average rainfall in September - East Calais, VT
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is October (0.63").
The driest month (with the least rainfall) is September (0.31").

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Average rainfall days in September
East Calais, VT

Average rainfall days in September - East Calais, VT
  • Average rainfall days in September: 6 days

The month with the highest number of rainy days is July (9.3 days).
The month with the least rainy days is February (2 days).

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Average snowfall in September
East Calais, VT

Average snowfall in September - East Calais, VT
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.5").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
East Calais, VT

Average snowfall days in September - East Calais, VT
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (12.6 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
East Calais, VT

Average daylight in September / Average sunshine in September - East Calais, 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 1min

The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The months with the least sunshine are January and February (Average sunshine: 2h and 30min).

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Average sunshine days in September
East Calais, VT

Average sunshine days in September - East Calais, VT
  • Average sunshine days in September: 22 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (17.6 days).

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Average UV index in September
East Calais, VT

Average UV index in September - East Calais, 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, November and December (UV index 1).

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Average cloud cover in September
East Calais, VT

Average cloud cover in September - East Calais, VT
  • Average cloud cover in September: 42

The months with the most cloud cover are January and February (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 39).

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Average visibility in September
East Calais, VT

Average visibility in September - East Calais, 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).

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East Calais, Vermont, USA

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