October weather forecast
Lewistown, MT

Weather in October

October, like September, in Lewistown, Montana, is another fresh autumn month, with an average temperature varying between 52.2°F (11.2°C) and 35.1°F (1.7°C).

Temperature

In Lewistown, Montana, the average high-temperature in October plummets from an enjoyable 67.5°F (19.7°C) in September to a fresh 52.2°F (11.2°C). In Lewistown, in October, the average low-temperature is 35.1°F (1.7°C).

Humidity

The average relative humidity in October in Lewistown is 62%.

Rainfall

In Lewistown, in October, during 9.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 126.2 rainfall days, and 17.83" (453mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall in Lewistown. In Lewistown, snow falls for 6.1 days, with typically accumulated 4.61" (117mm) of snow. In Lewistown, during the entire year, snow falls for 83.4 days and aggregates up to 45.51" (1156mm) of snow.

Daylight

The average length of the day in October is 10h and 52min.
On the first day of October in Lewistown, sunrise is at 7:16 am and sunset at 6:57 pm. On the last day of the month, sunrise is at 7:59 am and sunset at 6:03 pm MDT.

Sunshine

The average sunshine in October in Lewistown is 6.5h.

UV index

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Lewistown, Montana. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 2 in October interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in October in Lewistown?

In Lewistown, in October, the average high-temperature is 52.2°F (11.2°C), and the average low-temperature is 35.1°F (1.7°C).

What is the average humidity in October in Lewistown?

In Lewistown, Montana, the average relative humidity in October is 62%.

How much does it rain in Lewistown in October?

In Lewistown, in October, it is raining for 9.5 days, with typically 1.22" (31mm) of accumulated precipitation.

How much does it snow in Lewistown in October?

In Lewistown, during October, snow falls for 6.1 days and regularly aggregates up to 4.61" (117mm) of snow.

How many hours of daylight does Lewistown have in October?

In Lewistown, the average day length in October is 10h and 52min.

When are sunrise and sunset in October in Lewistown?

On the first day of October in Lewistown, sunrise is at 7:16 am and sunset at 6:57 pm. On the last day of the month, sunrise is at 7:59 am and sunset at 6:03 pm MDT.

How many hours of sunshine does Lewistown have in October?

In October, the average sunshine duration in Lewistown is 6.5h.

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

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Lewistown.

What is the UV index reading in October in Lewistown?

The average daily maximum UV index in October in Lewistown, Montana, is 2. A UV Index value 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Lewistown, MT

Average temperature in October - Lewistown, MT
  • Average high temperature in October: 52.2°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).

  • Average low temperature in October: 35.1°F

The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).

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Average pressure in October
Lewistown, MT

Average pressure in October - Lewistown, MT
  • Average pressure in October: 29.99"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in October
Lewistown, MT

Average wind speed in October - Lewistown, MT
  • Average wind speed in October: 9.9mph

The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).

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Average humidity in October
Lewistown, MT

Average humidity in October - Lewistown, MT
  • Average humidity in October: 62%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in October
Lewistown, MT

Average rainfall in October - Lewistown, MT
  • Average rainfall in October: 1.22"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").

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Average rainfall days in October
Lewistown, MT

Average rainfall days in October - Lewistown, MT
  • Average rainfall days in October: 9.5 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).

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Average snowfall in October
Lewistown, MT

Average snowfall in October - Lewistown, MT
  • Average snowfall in October: 4.61"

The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").

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Average snowfall days in October
Lewistown, MT

Average snowfall days in October - Lewistown, MT
  • Average snowfall days in October: 6.1 days

The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in October /
Average sunshine in October
Lewistown, MT

Average daylight in October / Average sunshine in October - Lewistown, MT
  • Average daylight in October: 10h and 52min

The month with the longest days is June (Average daylight: 15h and 50min).
The month with the shortest days is December (Average daylight: 8h and 35min).

  • Average sunshine in October: 6h and 30min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).

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Average sunshine days in October
Lewistown, MT

Average sunshine days in October - Lewistown, MT
  • Average sunshine days in October: 15.3 days

The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).

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Average UV index in October
Lewistown, MT

Average UV index in October - Lewistown, 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, April, October, November and December (UV index 2).

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Average cloud cover in October
Lewistown, MT

Average cloud cover in October - Lewistown, MT
  • Average cloud cover in October: 30

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).

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Average visibility in October
Lewistown, MT

Average visibility in October - Lewistown, 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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