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
The first month of the autumn, September, is still a comfortable month in Montpelier, Vermont, with average temperature ranging between max 67.6°F (19.8°C) and min 48°F (8.9°C).

Temperature

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

Humidity

The average relative humidity in Montpelier is 81%.

Rainfall

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

Snowfall

In Montpelier snow does not fall in June through September.

Daylight

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

Sunshine

In September, the average sunshine is 8h.

UV index

The average daily maximum UV index in Montpelier is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.

What is the temperature in September in Montpelier?

In September, the average high-temperature is 67.6°F (19.8°C), and 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 in Montpelier, Vermont, is 81%.

How many days does it rain in September in Montpelier?

In Montpelier, during September, the rain falls for 13.1 days and regularly aggregates up to 2.09" (53mm) of precipitation.

What is the driest month in Montpelier?

The month with the least rainfall in Montpelier, Vermont, is September when the rain falls for 13.1 days and typically collects 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?

In Montpelier, Vermont, the average length of the day in September is 12.5h.

How many hours of sunshine does Montpelier have in September?

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

How high is the UV index in September in Montpelier?

The average daily maximum UV index in September in Montpelier is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in September - Montpelier, VT
  • Average high temperature in September: 19.8°C

The warmest month (with the highest average high temperature) is July (24.9°C).
The month with the lowest average high temperature is January (-4.9°C).

  • Average low temperature in September: 8.9°C

The month with the highest average low temperature is July (12.9°C).
The coldest month (with the lowest average low temperature) is January (-11.8°C).

Average pressure in September - Montpelier, VT
  • Average pressure in September: 1017.5mbar

The month with the highest atmospheric pressure is November (1018.3mbar).
The month with the lowest atmospheric pressure is June (1012.8mbar).

Average wind speed in September - Montpelier, VT
  • Average wind speed in September: 8.6km/h

The windiest month (with the highest average wind speed) is April (11.7km/h).
The calmest month (with the lowest average wind speed) is August (8km/h).

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%).

Average rainfall in September - Montpelier, VT
  • Average rainfall in September: 53mm

The wettest month (with the highest rainfall) is June (87mm).
The driest month (with the least rainfall) is September (53mm).

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).

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

The month with the highest snowfall is February (338mm).
Months with the least snowfall are June, July, August and September (0mm).

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).

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).

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).

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).

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).

Average visibility in September - Montpelier, VT
  • Average visibility in September: 8km

Months with the highest visibility are April, May, June, July, August, September, October and November (8km).
Months with the lowest visibility are January, February, March and December (7km).