October weather forecast
Sweet Grass, MT

Share

Weather in October

October, like September, in Sweet Grass, Montana, is another fresh autumn month, with temperature in the range of an average low of 36.1°F (2.3°C) and an average high of 51.4°F (10.8°C).

Temperature

In Sweet Grass, stepping into October signifies a significant temperature decrement, moving down from September's refreshing 67.6°F (19.8°C) to a cool 51.4°F (10.8°C). Throughout October, Sweet Grass registers a consistent average low-temperature of 36.1°F (2.3°C).

Humidity

In Sweet Grass, the average relative humidity in October is 61%.

Rainfall

In Sweet Grass, in October, during 6.3 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 70.4 rainfall days, and 8.46" (215mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In Sweet Grass, in October, snow falls for 4 days, with typically accumulated 1.69" (43mm) of snow. In Sweet Grass, Montana, during the entire year, snow falls for 54.3 days and aggregates up to 19.49" (495mm) of snow.

Daylight

In Sweet Grass, the average length of the day in October is 10h and 46min.
On the first day of the month, sunrise is at 7:28 am and sunset at 7:05 pm. On the last day of October, sunrise is at 8:14 am and sunset at 6:08 pm MDT.

Sunshine

The average sunshine in October in Sweet Grass is 6.7h.

UV index

The months with the lowest UV index in Sweet Grass are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 2 in October translates into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
[Resources]

Frequently asked questions

What are the temperatures in Sweet Grass in October?

During October, Sweet Grass experiences an average high-temperature of 51.4°F (10.8°C) and a low-temperature of 36.1°F (2.3°C).

What is the average humidity in October in Sweet Grass?

In October, the average relative humidity is 61%.

How many days does it rain in October in Sweet Grass?

In Sweet Grass, in October, it is raining for 6.3 days, with typically 0.63" (16mm) of accumulated precipitation.

How many days does it snow in October in Sweet Grass?

In Sweet Grass, Montana, during October, snow falls for 4 days and regularly aggregates up to 1.69" (43mm) of snow.

What is the average length of the day in October in Sweet Grass?

In Sweet Grass, the average day length in October is 10h and 46min.

When are sunrise and sunset in October in Sweet Grass?

In October, on the first day of the month, sunrise is at 7:28 am and sunset at 7:05 pm. On the last day of the month, in Sweet Grass, Montana, sunrise is at 8:14 am and sunset at 6:08 pm MDT.

How long on average sun shines in October in Sweet Grass?

In Sweet Grass, Montana, the average sunshine duration in October is 6.7h.

When is the lowest UV index in Sweet Grass?

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.

What is the UV index reading in October in Sweet Grass?

The average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a low health threat 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 October
Sweet Grass, MT

Average temperature in October - Sweet Grass, MT
  • Average high temperature in October: 51.4°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (27.1°F).

  • Average low temperature in October: 36.1°F

The month with the highest average low temperature is August (55.2°F).
The coldest month (with the lowest average low temperature) is December (15.3°F).

[Resources]

Average pressure in October
Sweet Grass, MT

Average pressure in October - Sweet Grass, MT
  • Average pressure in October: 30"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

[Resources]

Average wind speed in October
Sweet Grass, MT

Average wind speed in October - Sweet Grass, MT
  • Average wind speed in October: 10.9mph

The windiest month (with the highest average wind speed) is January (11.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.8mph).

[Resources]

Average humidity in October
Sweet Grass, MT

Average humidity in October - Sweet Grass, MT
  • Average humidity in October: 61%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (43%).

[Resources]

Average rainfall in October
Sweet Grass, MT

Average rainfall in October - Sweet Grass, MT
  • Average rainfall in October: 0.63"

The wettest month (with the highest rainfall) is June (1.77").
The driest month (with the least rainfall) is July (0.31").

[Resources]

Average rainfall days in October
Sweet Grass, MT

Average rainfall days in October - Sweet Grass, MT
  • Average rainfall days in October: 6.3 days

The month with the highest number of rainy days is May (10.4 days).
The month with the least rainy days is November (2.6 days).

[Resources]

Average snowfall in October
Sweet Grass, MT

Average snowfall in October - Sweet Grass, MT
  • Average snowfall in October: 1.69"

The month with the highest snowfall is February (3.58").
The months with the least snowfall are June, July and August (0").

[Resources]

Average snowfall days in October
Sweet Grass, MT

Average snowfall days in October - Sweet Grass, MT
  • Average snowfall days in October: 4 days

The month with the highest number of snowfall days is December (10.2 days).
The months with the least snowfall days are July and August (0 days).

[Resources]

Average daylight in October /
Average sunshine in October
Sweet Grass, MT

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

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 October: 6h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).

[Resources]

Average sunshine days in October
Sweet Grass, MT

Average sunshine days in October - Sweet Grass, MT
  • Average sunshine days in October: 21.3 days

The month with the most sunshine days is July (23.5 days).
The month with the least sunshine days is April (17.4 days).

[Resources]

Average UV index in October
Sweet Grass, MT

Average UV index in October - Sweet Grass, MT
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

[Resources]

Average cloud cover in October
Sweet Grass, MT

Average cloud cover in October - Sweet Grass, MT
  • Average cloud cover in October: 28

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 15).

[Resources]

Average visibility in October
Sweet Grass, MT

Average visibility in October - Sweet Grass, MT
  • Average visibility in October: 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).

[Resources]

Sweet Grass, Montana, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location