October weather forecast
Simpson, MT

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Weather in October

October, the same as September, is another fresh autumn month in Simpson, Montana, with temperature in the range of an average high of 54.3°F (12.4°C) and an average low of 38.8°F (3.8°C).

Temperature

October's onset brings a noticeable temperature drop, falling from a pleasant 70.5°F (21.4°C) in September to a cool 54.3°F (12.4°C). During October, the temperature in Simpson is averaged to a low of 38.8°F (3.8°C) at night.

Humidity

In Simpson, Montana, the average relative humidity in October is 59%.

Rainfall

In Simpson, in October, during 7.7 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Simpson, during the entire year, the rain falls for 98.7 days and collects up to 8.23" (209mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. In October, it is snowing for 1.9 days. Throughout October, 0.79" (20mm) of snow is accumulated. Throughout the year, in Simpson, there are 53.5 snowfall days, and 14.25" (362mm) of snow is accumulated.

Daylight

In October, the average length of the day in Simpson is 10h and 46min.
On the first day of the month, sunrise is at 7:21 am and sunset at 6:58 pm. On the last day of October, sunrise is at 8:07 am and sunset at 6:01 pm MDT.

Sunshine

In Simpson, the average sunshine in October is 6.6h.

UV index

The months with the lowest UV index 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 hazard from unprotected exposure to Sun's UV rays for the average person.
Note: During October, 2 as the daily maximum UV index converts into the following advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. 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 are October temperatures in Simpson?

In October, in Simpson, the average high-temperature is 54.3°F (12.4°C), and the average low-temperature is 38.8°F (3.8°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in August is calculated to be 80.6°F (27°C).

What is the average humidity in October in Simpson?

The average relative humidity in October in Simpson, Montana, is 59%.

How many days does it rain in October in Simpson?

In Simpson, during October, the rain falls for 7.7 days and regularly aggregates up to 0.59" (15mm) of precipitation.

How many days does it snow in October in Simpson?

In Simpson, in October, during 1.9 snowfall days, 0.79" (20mm) of snow is typically accumulated.

How many hours of daylight does Simpson have in October?

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

When is the sunrise / sunset in October in Simpson?

On the first day of October, sunrise is at 7:21 am and sunset at 6:58 pm. On the last day of the month, sunrise is at 8:07 am and sunset at 6:01 pm MDT.

How long on average sun shines in October in Simpson?

The average sunshine duration in October is 6.6h.

What is the month with the lowest UV index in Simpson?

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

How high is the UV index in October in Simpson?

In Simpson, Montana, the average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a low health threat from exposure to the Sun's 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
Simpson, MT

Average temperature in October - Simpson, MT
  • Average high temperature in October: 54.3°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The months with the lowest average high temperature are January and December (27.1°F).

  • Average low temperature in October: 38.8°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 (13.5°F).

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Average pressure in October
Simpson, MT

Average pressure in October - Simpson, MT
  • Average pressure in October: 29.97"Hg

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in October
Simpson, MT

Average wind speed in October - Simpson, MT
  • Average wind speed in October: 10.1mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

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Average humidity in October
Simpson, MT

Average humidity in October - Simpson, MT
  • Average humidity in October: 59%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (40%).

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Average rainfall in October
Simpson, MT

Average rainfall in October - Simpson, MT
  • Average rainfall in October: 0.59"

The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is December (0.31").

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Average rainfall days in October
Simpson, MT

Average rainfall days in October - Simpson, MT
  • Average rainfall days in October: 7.7 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (4 days).

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Average snowfall in October
Simpson, MT

Average snowfall in October - Simpson, MT
  • Average snowfall in October: 0.79"

The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in October
Simpson, MT

Average snowfall days in October - Simpson, MT
  • Average snowfall days in October: 1.9 days

The month with the highest number of snowfall days is February (11 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
Simpson, MT

Average daylight in October / Average sunshine in October - Simpson, 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 month with the least sunshine is February (Average sunshine: 5h and 18min).

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Average sunshine days in October
Simpson, MT

Average sunshine days in October - Simpson, MT
  • Average sunshine days in October: 19.7 days

The month with the most sunshine days is September (20.3 days).
The month with the least sunshine days is April (12.8 days).

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Average UV index in October
Simpson, MT

Average UV index in October - Simpson, 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).

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Average cloud cover in October
Simpson, MT

Average cloud cover in October - Simpson, MT
  • Average cloud cover in October: 29

The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 16).

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Average visibility in October
Simpson, MT

Average visibility in October - Simpson, 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).

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Simpson, Montana, USA

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