September weather forecast
Sleeping Buffalo, MT

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Weather in September

September, the first month of the autumn in Sleeping Buffalo, is also an agreeable month, with temperature in the range of an average high of 71.1°F (21.7°C) and an average low of 53.2°F (11.8°C).

Temperature

The onset of September introduces a moderate change in Sleeping Buffalo's weather, with average high-temperatures falling from August's warm 82.8°F (28.2°C) to an agreeable 71.1°F (21.7°C). Sleeping Buffalo, during the month of September, experiences an average low-temperature of 53.2°F (11.8°C).

Humidity

In September, the average relative humidity is 46%.

Rainfall

In Sleeping Buffalo, in September, it is raining for 8.1 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, there are 91.8 rainfall days, and 10.63" (270mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Sleeping Buffalo.

Daylight

In Sleeping Buffalo, the average length of the day in September is 12h and 34min.
On the first day of September in Sleeping Buffalo, sunrise is at 6:28 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:50 pm MDT.

Sunshine

In Sleeping Buffalo, the average sunshine in September is 9.8h.

UV index

The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 4 suggests this advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What is the usual temperature for Sleeping Buffalo in September?

Sleeping Buffalo in September has an average high-temperature of 71.1°F (21.7°C) and an average low-temperature of 53.2°F (11.8°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is computed to be 82.4°F (28°C).

What is the average humidity in September in Sleeping Buffalo?

In September, the average relative humidity in Sleeping Buffalo, Montana, is 46%.

How many days does it rain in September in Sleeping Buffalo?

In Sleeping Buffalo, in September, it is raining for 8.1 days, with typically 1.1" (28mm) of accumulated precipitation.

When it does not snow in Sleeping Buffalo?

In Sleeping Buffalo, snow does not fall in June through September.

Does it snow in Sleeping Buffalo in September?

In Sleeping Buffalo, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Sleeping Buffalo?

In September, the average day length in Sleeping Buffalo is 12h and 34min.

What time are sunrise and sunset in September in Sleeping Buffalo?

In September, on the first day of the month, sunrise is at 6:28 am and sunset at 7:51 pm. On the last day of the month, in Sleeping Buffalo, sunrise is at 7:09 am and sunset at 6:50 pm MDT.

How many hours of sunshine does Sleeping Buffalo have in September?

In September, the average sunshine duration in Sleeping Buffalo is 9.8h.

How high is the UV index in September in Sleeping Buffalo?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sleeping Buffalo, MT

Average temperature in September - Sleeping Buffalo, MT
  • Average high temperature in September: 71.1°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is February (24.4°F).

  • Average low temperature in September: 53.2°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (10°F).

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Average pressure in September
Sleeping Buffalo, MT

Average pressure in September - Sleeping Buffalo, MT
  • Average pressure in September: 29.92"Hg

The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in September
Sleeping Buffalo, MT

Average wind speed in September - Sleeping Buffalo, MT
  • Average wind speed in September: 10mph

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is February (8.3mph).

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Average humidity in September
Sleeping Buffalo, MT

Average humidity in September - Sleeping Buffalo, MT
  • Average humidity in September: 46%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (41%).

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Average rainfall in September
Sleeping Buffalo, MT

Average rainfall in September - Sleeping Buffalo, MT
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is February (0.43").

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Average rainfall days in September
Sleeping Buffalo, MT

Average rainfall days in September - Sleeping Buffalo, MT
  • Average rainfall days in September: 8.1 days

The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in September
Sleeping Buffalo, MT

Average snowfall in September - Sleeping Buffalo, MT
  • Average snowfall in September: 0"

The month with the highest snowfall is December (3.43").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Sleeping Buffalo, MT

Average snowfall days in September - Sleeping Buffalo, MT
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is January (12.3 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
Sleeping Buffalo, MT

Average daylight in September / Average sunshine in September - Sleeping Buffalo, 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 24min).

  • Average sunshine in September: 9h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in September
Sleeping Buffalo, MT

Average sunshine days in September - Sleeping Buffalo, MT
  • Average sunshine days in September: 20.6 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is April (15.4 days).

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Average UV index in September
Sleeping Buffalo, MT

Average UV index in September - Sleeping Buffalo, MT
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in September
Sleeping Buffalo, MT

Average cloud cover in September - Sleeping Buffalo, MT
  • Average cloud cover in September: 26

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 18).

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Average visibility in September
Sleeping Buffalo, MT

Average visibility in September - Sleeping Buffalo, MT
  • Average visibility in September: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Sleeping Buffalo, Montana, USA

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