October weather - Autumn 2024

Weather in October
Frequently asked questions
Average temperature in October
Average pressure in October
Average wind speed in October
Average humidity in October
Average rainfall in October
Average rainfall days in October
Average snowfall in October
Average snowfall days in October
Average daylight in October
Average sunshine in October
Average sunshine days in October
Average UV index in October
Average cloud cover in October
Average visibility in October

Vast fields and planted forests near the scenic mountainous region in Big Sky, Montana

Weather in October

October in Big Sky brings about a stronger presence of autumn, coupled with a quick return to colder temperatures. The charm of fall becomes even more pronounced, rendering the atmosphere picture-perfect. However, winter begins to sneak in, with snow making a comeback towards the month's end. October is a month of transformation - its weather changing the scenery from the russet tones of autumn to the white blanket of winter. It's a captivating interplay that contributes to Big Sky's fascinating weather dynamic.

Temperature

The onset of October brings a clear temperature shift, with the average high-temperature decreasing from an enjoyable 63.5°F (17.5°C) in September to a frosty 45.5°F (7.5°C). An average minimum temperature of 27.5°F (-2.5°C) is recorded during the month of October.

Humidity

In October, the average relative humidity is 71%.

Rainfall

In Big Sky, during October, the rain falls for 8.3 days and regularly aggregates up to 2.01" (51mm) of precipitation. Throughout the year, there are 116.1 rainfall days, and 23.5" (597mm) of precipitation is accumulated.

Snowfall

January through December are months with snowfall. In Big Sky, in October, during 13.8 snowfall days, 12.44" (316mm) of snow is typically accumulated. Throughout the year, there are 151.6 snowfall days, and 124.06" (3151mm) of snow is accumulated.

Daylight

In Big Sky, the average length of the day in October is 10h and 56min.
On the first day of October, sunrise is at 7:24 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 6:13 pm MDT.

Sunshine

In October, the average sunshine is 6.6h.

UV index

The average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In October, a daily maximum UV index of 2 leads to the following instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.

Updated: Jul 12, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in October?

The high-temperature, in October, in Big Sky, records 45.5°F (7.5°C), while the low-temperature is 27.5°F (-2.5°C).

What is the average humidity in October?

In October, the average relative humidity is 71%.

How much does it rain in October?

In Big Sky, in October, it is raining for 8.3 days, with typically 2.01" (51mm) of accumulated precipitation.

How much does it snow in October?

In October, it is snowing for 13.8 days. Throughout October, 12.44" (316mm) of snow is accumulated.

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

In Big Sky, the average day length in October is 10h and 56min.

When is the sunrise / sunset in October?

On the first day of October, sunrise is at 7:24 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 6:13 pm MDT.

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

In October, the average sunshine duration is 6.6h.

What is the UV index intensity in October?

The average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S October N D

Sep

October

Nov

Average high temperature

63.5°F 17.5°C

45.5°F 7.5°C

32.2°F 0.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.6mph 9km/h

6.5mph 10.5km/h

7.1mph 11.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

14.5

13.6

Average UV index

Average cloud cover

Average visibility

Average temperature in October
Big Sky, MT

Average high temperature in October: 45.5°F

The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is December (22.5°F).

Average low temperature in October: 27.5°F

The month with the highest average low temperature is August (45.1°F).
The coldest month (with the lowest average low temperature) is December (7.9°F).

Average pressure in October
Big Sky, MT

Average pressure in October: 30.06"Hg

The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in October
Big Sky, MT

Average wind speed in October: 6.1mph

The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in October
Big Sky, MT

Average humidity in October: 71%

The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is August (51%).

Average rainfall in October
Big Sky, MT

Average rainfall in October: 2.01"

The wettest months (with the highest rainfall) are April and May (2.91").
The driest month (with the least rainfall) is July (1.18").

Average rainfall days in October
Big Sky, MT

Average rainfall days in October: 8.3 days

The month with the highest number of rainy days is June (16.6 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in October
Big Sky, MT

Average snowfall in October: 12.44"

The month with the highest snowfall is April (19.88").
The month with the least snowfall is August (0.08").

Average snowfall days in October
Big Sky, MT

Average snowfall days in October: 13.8 days

The month with the highest number of snowfall days is March (21 days).
The month with the least snowfall days is August (0.3 days).

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

Average daylight in October: 10h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

Average sunshine in October: 6h and 4min

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

Average sunshine days in October
Big Sky, MT

Average sunshine days in October: 13.6 days

The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is May (5.7 days).

Average UV index in October
Big Sky, MT

Average UV index in October: 2

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).

Average cloud cover in October
Big Sky, MT

Average cloud cover in October: 34

The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 17).

Average visibility in October
Big Sky, MT

Average visibility in October: 6mi

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

October weather forecast
Big Sky, MT

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