October weather forecast
Big Arm, MT

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Weather in October

October, like September, in Big Arm, Montana, is another fresh autumn month, with an average temperature ranging between min 33.1°F (0.6°C) and max 51.1°F (10.6°C).

Temperature

As Big Arm steps into October, a marked temperature drop is observed, with the average high-temperature reducing from September's refreshing 67.6°F (19.8°C) to a cool 51.1°F (10.6°C). An average low-temperature of 33.1°F (0.6°C) is observed during October nights in Big Arm.

Humidity

The average relative humidity in October in Big Arm is 72%.

Rainfall

In Big Arm, in October, it is raining for 14.5 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, there are 160.2 rainfall days, and 18.11" (460mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall in Big Arm, Montana. In Big Arm, Montana, in October, snow falls for 3.4 days, with typically accumulated 1.06" (27mm) of snow. Throughout the year, in Big Arm, there are 99 snowfall days, and 47.28" (1201mm) of snow is accumulated.

Daylight

The average length of the day in October in Big Arm is 10h and 49min.
On the first day of the month, sunrise is at 7:37 am and sunset at 7:15 pm. On the last day of October, sunrise is at 8:21 am and sunset at 6:20 pm MDT.

Sunshine

The average sunshine in October is 6.9h.

UV index

In October, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.
Note: In October, a regular UV index of 2 translates into these guidelines:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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Frequently asked questions

What is the temperature in October in Big Arm?

During October, Big Arm experiences an average high-temperature of 51.1°F (10.6°C) and a low-temperature of 33.1°F (0.6°C).

What is the average humidity in October in Big Arm?

In Big Arm, the average relative humidity in October is 72%.

How much does it rain in Big Arm in October?

In Big Arm, Montana, in October, during 14.5 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

How many days does it snow in October in Big Arm?

In Big Arm, in October, during 3.4 snowfall days, 1.06" (27mm) of snow is typically accumulated.

How many hours of daylight does Big Arm have in October?

In Big Arm, Montana, the average day length in October is 10h and 49min.

When are sunrise and sunset in October in Big Arm?

In October, on the first day of the month, sunrise is at 7:37 am and sunset at 7:15 pm. On the last day of the month, in Big Arm, Montana, sunrise is at 8:21 am and sunset at 6:20 pm MDT.

How many hours of sunshine does Big Arm have in October?

In October, the average sunshine duration in Big Arm, Montana, is 6.9h.

What is the UV index reading in October in Big Arm?

In Big Arm, Montana, the average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
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 October
Big Arm, MT

Average temperature in October - Big Arm, MT
  • Average high temperature in October: 51.1°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (27.9°F).

  • Average low temperature in October: 33.1°F

The months with the highest average low temperature are July and August (48.9°F).
The coldest month (with the lowest average low temperature) is December (16.7°F).

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Average pressure in October
Big Arm, MT

Average pressure in October - Big Arm, MT
  • Average pressure in October: 30.05"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in October
Big Arm, MT

Average wind speed in October - Big Arm, MT
  • Average wind speed in October: 4.2mph

The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in October
Big Arm, MT

Average humidity in October - Big Arm, MT
  • Average humidity in October: 72%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (51%).

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Average rainfall in October
Big Arm, MT

Average rainfall in October - Big Arm, MT
  • Average rainfall in October: 1.54"

The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are July and August (0.55").

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Average rainfall days in October
Big Arm, MT

Average rainfall days in October - Big Arm, MT
  • Average rainfall days in October: 14.5 days

The months with the highest number of rainy days are March and April (18.8 days).
The month with the least rainy days is August (7 days).

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Average snowfall in October
Big Arm, MT

Average snowfall in October - Big Arm, MT
  • Average snowfall in October: 1.06"

The month with the highest snowfall is February (10.28").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in October
Big Arm, MT

Average snowfall days in October - Big Arm, MT
  • Average snowfall days in October: 3.4 days

The month with the highest number of snowfall days is December (19.8 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in October /
Average sunshine in October
Big Arm, MT

Average daylight in October / Average sunshine in October - Big Arm, MT
  • Average daylight in October: 10h and 5min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in October: 6h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in October
Big Arm, MT

Average sunshine days in October - Big Arm, MT
  • Average sunshine days in October: 13.7 days

The month with the most sunshine days is July (21.3 days).
The month with the least sunshine days is March (6.4 days).

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Average UV index in October
Big Arm, MT

Average UV index in October - Big Arm, MT
  • Average UV index in October: 2

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in October
Big Arm, MT

Average cloud cover in October - Big Arm, MT
  • Average cloud cover in October: 34

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 14).

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Average visibility in October
Big Arm, MT

Average visibility in October - Big Arm, MT
  • Average visibility in October: 6mi

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).

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Big Arm, Montana, USA

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