Montpelier
Vermont, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Montpelier, VT

Sunset in the scenic leafy town of Montpelier, Vermont, in autumn
Sunset in the scenic leafy town of Montpelier, Vermont, in autumn
September, the first month of the autumn, in Montpelier, is still a pleasant month, with average temperature ranging between max 68.7°F (20.4°C) and min 46°F (7.8°C).

Temperature

In Montpelier, the average high-temperature slightly decreases, from a moderately hot 76.6°F (24.8°C) in August, to an agreeable 68.7°F (20.4°C). In Montpelier, the average low-temperature is 46°F (7.8°C).

Rainfall

In Montpelier, Vermont, during 10.4 rainfall days, 3.1" (79.2mm) of precipitation is typically accumulated. Throughout the year, there are 148.6 rainfall days, and 37.3" (946.6mm) of precipitation is accumulated.

Snowfall

In Montpelier, it doesn't snow. In October, it regularly snows. In Montpelier, during the entire year, snow aggregates up to 94.2" (2392.7mm).

Daylight

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

Sunshine

In September, the average sunshine is 6h.

UV index

In September, the average daily maximum UV index in Montpelier is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
In September, the average maximum UV index of 5 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Montpelier?

In September, in Montpelier, Vermont, the average high-temperature is 68.7°F (20.4°C), and the average low-temperature is 46°F (7.8°C).

How many days does it rain in September in Montpelier?

In Montpelier, in September, it is raining for 10.4 days, with typically 3.1" (79.2mm) of accumulated precipitation.

Does it snow in Montpelier in September?

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

How many hours of daylight does Montpelier have in September?

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

How long on average sun shines in September in Montpelier?

In September, the average sunshine is 6h.

How high is the UV index in September in Montpelier?

In Montpelier, Vermont, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Montpelier, VT
  • Average high temperature in September: 20.4°C

The warmest month (with the highest average high temperature) is July (25.8°C).
The month with the lowest average high temperature is January (-3.1°C).

  • Average low temperature in September: 7.8°C

The month with the highest average low temperature is July (13.2°C).
The coldest month (with the lowest average low temperature) is January (-13.9°C).

Average rainfall in September - Montpelier, VT
  • Average rainfall in September: 79.2mm

The wettest month (with the highest rainfall) is July (103.6mm).
The driest month (with the lowest rainfall) is February (51.8mm).

Average rainfall days in September - Montpelier, VT
  • Average rainfall days in September: 10.4 days

The month with the highest number of rainy days is December (14.4 days).
The month with the lowest number of rainy days is September (10.4 days).

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

The month with the highest snowfall is January (574mm).
Months with the lowest snowfall are May, 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 (12 days).
Months with the lowest number of snowfall days are May, 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 shortest days is December (Average daylight: 8.9h).

  • Average sunshine in September: 6h

Months with most sunshine are June and July (Average sunshine: 9h).
Months with least sunshine are November and December (Average sunshine: 3).

Average UV index in September - Montpelier, VT
  • Average UV index in September: 5

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January and December (UV index 1).