September weather forecast
Polebridge, MT

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Weather in September

The first month of the autumn, September, is still a comfortable month in Polebridge, Montana, with an average temperature ranging between max 65.3°F (18.5°C) and min 38.5°F (3.6°C).

Temperature

In September, the average high-temperature goes from a moderately hot 77.5°F (25.3°C) in August to a refreshing 65.3°F (18.5°C). Polebridge's nighttime average of 38.5°F (3.6°C) during September reflects a substantial decrease from the daytime temperature.

Humidity

In September, the average relative humidity in Polebridge is 64%.

Rainfall

In Polebridge, in September, during 9 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. In Polebridge, during the entire year, the rain falls for 136.9 days and collects up to 16.46" (418mm) of precipitation.

Snowfall

Months with snowfall in Polebridge, Montana, are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Polebridge, there are 107.6 snowfall days, and 51.42" (1306mm) of snow is accumulated.

Daylight

In September, the average length of the day in Polebridge is 12h and 34min.
On the first day of September in Polebridge, Montana, sunrise is at 6:55 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 7:17 pm MDT.

Sunshine

In September, the average sunshine in Polebridge is 9.3h.

UV index

The average daily maximum UV index in September in Polebridge, Montana, is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 3 during September leads to these instructions:
Exercise prevention - Precautions against solar damage are endorsed. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What are the temperatures in Polebridge in September?

The average high-temperature, in September, in Polebridge, is 65.3°F (18.5°C), while the average low-temperature is 38.5°F (3.6°C).

What is the average humidity in September in Polebridge?

In September, the average relative humidity in Polebridge is 64%.

How many days does it rain in September in Polebridge?

In Polebridge, in September, it is raining for 9 days, with typically 0.87" (22mm) of accumulated precipitation.

When does it start snowing in Polebridge?

September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Polebridge have in September?

The average day length in September in Polebridge, Montana, is 12h and 34min.

When are sunrise and sunset in September in Polebridge?

In September, on the first day of the month, sunrise is at 6:55 am and sunset at 8:18 pm. On the last day of the month, in Polebridge, sunrise is at 7:36 am and sunset at 7:17 pm MDT.

How many hours of sunshine does Polebridge have in September?

In Polebridge, Montana, the average sunshine duration in September is 9.3h.

What is the UV index intensity in September in Polebridge?

In Polebridge, 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 Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Polebridge, MT

Average temperature in September - Polebridge, MT
  • Average high temperature in September: 65.3°F

The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is December (25.5°F).

  • Average low temperature in September: 38.5°F

The month with the highest average low temperature is August (45°F).
The coldest month (with the lowest average low temperature) is February (12.7°F).

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Average pressure in September
Polebridge, MT

Average pressure in September - Polebridge, MT
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in September
Polebridge, MT

Average wind speed in September - Polebridge, MT
  • Average wind speed in September: 3.7mph

The windiest month (with the highest average wind speed) is April (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).

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Average humidity in September
Polebridge, MT

Average humidity in September - Polebridge, MT
  • Average humidity in September: 64%

The month with the highest relative humidity is January (94%).
The months with the lowest relative humidity are July and August (56%).

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Average rainfall in September
Polebridge, MT

Average rainfall in September - Polebridge, MT
  • Average rainfall in September: 0.87"

The wettest month (with the highest rainfall) is March (1.93").
The driest month (with the least rainfall) is August (0.51").

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Average rainfall days in September
Polebridge, MT

Average rainfall days in September - Polebridge, MT
  • Average rainfall days in September: 9 days

The month with the highest number of rainy days is April (16.6 days).
The month with the least rainy days is August (6.4 days).

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Average snowfall in September
Polebridge, MT

Average snowfall in September - Polebridge, MT
  • Average snowfall in September: 0.04"

The month with the highest snowfall is January (11.02").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Polebridge, MT

Average snowfall days in September - Polebridge, MT
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is December (21.4 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in September /
Average sunshine in September
Polebridge, MT

Average daylight in September / Average sunshine in September - Polebridge, MT
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in September: 9h and 2min

The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days in September
Polebridge, MT

Average sunshine days in September - Polebridge, MT
  • Average sunshine days in September: 18.7 days

The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is March (6.3 days).

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Average UV index in September
Polebridge, MT

Average UV index in September - Polebridge, MT
  • Average UV index in September: 3

The month with the highest UV index is July (UV index 6).
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
Polebridge, MT

Average cloud cover in September - Polebridge, MT
  • Average cloud cover in September: 25

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 15).

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Average visibility in September
Polebridge, MT

Average visibility in September - Polebridge, MT
  • Average visibility in September: 6mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).

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Polebridge, Montana, USA

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