September weather forecast
Virgelle, MT

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Weather in September

September, the first month of the autumn in Virgelle, is still a pleasant month, with temperature in the range of an average low of 52.9°F (11.6°C) and an average high of 71.4°F (21.9°C).

Temperature

September brings a drop in Virgelle's average high-temperature, falling from a moderately hot 82.6°F (28.1°C) in August to an agreeable 71.4°F (21.9°C). An average minimum temperature of 52.9°F (11.6°C) is recorded during the month of September.

Humidity

In September, the average relative humidity is 44%.

Rainfall

In Virgelle, in September, during 6.6 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. Throughout the year, there are 91 rainfall days, and 6.42" (163mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Virgelle are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.43" (11mm) of snow. Throughout the year, there are 44.2 snowfall days, and 11.18" (284mm) of snow is accumulated.

Daylight

The average length of the day in September is 12h and 33min.
On the first day of September, sunrise is at 6:40 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:01 pm MDT.

Sunshine

In Virgelle, the average sunshine in September is 9.9h.

UV index

The average daily maximum UV index in September in Virgelle is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: In September, the maximum UV index of 4 suggests these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. When the Sun is at its strongest around midday, find shade and limit exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Virgelle in September?

During September, Virgelle experiences an average high-temperature of 71.4°F (21.9°C) and a low-temperature of 52.9°F (11.6°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is computed to be 84.2°F (29°C).

What is the average humidity in September?

In September, the average relative humidity is 44%.

How much does it rain in September?

In Virgelle, Montana, in September, during 6.6 rainfall days, 0.47" (12mm) of precipitation is typically accumulated.

When does it start to snow?

September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.43" (11mm) of snow.

How many hours of daylight does Virgelle have in September?

In Virgelle, the average day length in September is 12h and 33min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:40 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:01 pm MDT.

How many hours of sunshine does Virgelle have in September?

The average sunshine duration in September in Virgelle, Montana, is 9.9h.

What is the UV index intensity in September?

The average daily maximum UV index in September in Virgelle is 4. A UV Index estimate of 3 to 5 represents a medium health risk 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
Virgelle, MT

Average temperature in September - Virgelle, MT
  • Average high temperature in September: 71.4°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (30.2°F).

  • Average low temperature in September: 52.9°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).

Average pressure in September
Virgelle, MT

Average pressure in September - Virgelle, MT
  • Average pressure in September: 29.93"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in September
Virgelle, MT

Average wind speed in September - Virgelle, MT
  • Average wind speed in September: 9.1mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

Average humidity in September
Virgelle, MT

Average humidity in September - Virgelle, MT
  • Average humidity in September: 44%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (38%).

Average rainfall in September
Virgelle, MT

Average rainfall in September - Virgelle, MT
  • Average rainfall in September: 0.47"

The wettest month (with the highest rainfall) is June (1.22").
The driest month (with the least rainfall) is December (0.28").

Average rainfall days in September
Virgelle, MT

Average rainfall days in September - Virgelle, MT
  • Average rainfall days in September: 6.6 days

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (4.2 days).

Average snowfall in September
Virgelle, MT

Average snowfall in September - Virgelle, MT
  • Average snowfall in September: 0.43"

The month with the highest snowfall is January (2.4").
The months with the least snowfall are June, July and August (0").

Average snowfall days in September
Virgelle, MT

Average snowfall days in September - Virgelle, MT
  • Average snowfall days in September: 0.5 days

The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in September: 9h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

Average sunshine days in September
Virgelle, MT

Average sunshine days in September - Virgelle, MT
  • Average sunshine days in September: 21.5 days

The month with the most sunshine days is September (21.5 days).
The month with the least sunshine days is June (14.6 days).

Average UV index in September
Virgelle, MT

Average UV index in September - Virgelle, MT
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Virgelle, MT

Average cloud cover in September - Virgelle, MT
  • Average cloud cover in September: 23

The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 14).

Average visibility in September
Virgelle, MT

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

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

Virgelle, Montana, USA

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