September weather forecast and climate
Montpelier, VT

Sunset in the scenic leafy town of Montpelier, Vermont
Sunset in the scenic leafy town of Montpelier, Vermont

Weather in September

The first month of the autumn, September, is still a comfortable month in Montpelier, Vermont, with temperature in the range of an average low of 48°F (8.9°C) and an average high of 67.6°F (19.8°C).

Temperature

In Montpelier, the average high-temperature marginally drops, from a moderately hot 74.8°F (23.8°C) in August, to a comfortable 67.6°F (19.8°C). In September, the average low-temperature is 48°F (8.9°C).

Humidity

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

Rainfall

September is the month with the least rainfall in Montpelier. Rain falls for 13.1 days and accumulates 2.09" (53mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September is 12.5h.

Sunshine

In September, the average sunshine in Montpelier is 8h.

UV index

The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Montpelier?

The average high-temperature, in September, is 67.6°F (19.8°C), while the average low-temperature is 48°F (8.9°C).

What is the average humidity in September in Montpelier?

The average relative humidity in September is 81%.

How many days does it rain in September in Montpelier?

In Montpelier, Vermont, in September, it is raining for 13.1 days, with typically 2.09" (53mm) of accumulated precipitation.

What is the driest month in Montpelier?

September is the month with the least rainfall in Montpelier. Rain falls for 13.1 days and accumulates 2.09" (53mm) of precipitation.

Does it snow in Montpelier in September?

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

When it does not snow in Montpelier?

June through September are months without snowfall.

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

The average length of the day in September in Montpelier is 12.5h.

How many hours of sunshine does Montpelier have in September?

In Montpelier, the average sunshine in September is 8h.

What is the UV index reading in September in Montpelier?

In Montpelier, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in September
Montpelier, VT

Average temperature in September - Montpelier, VT
  • Average high temperature in September: 67.6°F

The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (23.2°F).

  • Average low temperature in September: 48°F

The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

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Average pressure in September
Montpelier, VT

Average pressure in September - Montpelier, VT
  • Average pressure in September: 30.05"

The month with the highest atmospheric pressure is November (30.07").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in September
Montpelier, VT

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

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in September
Montpelier, VT

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

Months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in September
Montpelier, VT

Average rainfall in September - Montpelier, VT
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is September (2.09").

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Average rainfall days in September
Montpelier, VT

Average rainfall days in September - Montpelier, VT
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is January (6.8 days).

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Average snowfall in September
Montpelier, VT

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

The month with the highest snowfall is February (13.31").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Montpelier, VT

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

The month with the highest number of snowfall days is January (22.3 days).
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
Montpelier, VT

Average daylight in September / Average sunshine in September - Montpelier, VT
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in September: 8h

The month with the most sunshine is July (Average sunshine: 9.8h).
Months with the least sunshine are January and February (Average sunshine: 2.7).

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Average sunshine days in September
Montpelier, VT

Average sunshine days in September - Montpelier, VT
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is September (14.6 days).
The month with the least sunshine days is February (5.5 days).

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Average UV index in September
Montpelier, VT

Average UV index in September - Montpelier, VT
  • Average UV index in September: 3

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in September
Montpelier, VT

Average cloud cover in September - Montpelier, VT
  • Average cloud cover in September: 43

Months with the most cloud cover are January and February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 39).

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Average visibility in September
Montpelier, VT

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

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

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