October weather forecast and climate
Westby, MT

Weather in October

October, the same as September, is another fresh autumn month in Westby, Montana, with temperature in the range of an average high of 52.7°F (11.5°C) and an average low of 37.9°F (3.3°C).

Temperature

In October, the average high-temperature plummets, from an agreeable 70°F (21.1°C) in September, to a fresh 52.7°F (11.5°C). In October, the average low-temperature is 37.9°F (3.3°C).

Humidity

The average relative humidity in Westby is 62%.

Rainfall

In October, in Westby, the rain falls for 7.6 days. Throughout October, 0.79" (20mm) of precipitation is accumulated. Throughout the year, there are 93.3 rainfall days, and 12.01" (305mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Westby are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 3.2 snowfall days, it receives 1.57" (40mm) of snow. In Westby, during the entire year, snow falls for 66.5 days, and aggregates up to 19.02" (483mm) of snow.

Daylight

The average length of the day in October is 10.8h.

Sunshine

In October, the average sunshine in Westby is 6.1h.

UV index

In Westby, the average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 Westby?

The average high-temperature, in October, in Westby, Montana, is 52.7°F (11.5°C), while the average low-temperature is 37.9°F (3.3°C).

What is the average humidity in October in Westby?

The average relative humidity in October in Westby, Montana, is 62%.

How much does it rain in Westby in October?

In October, in Westby, the rain falls for 7.6 days. Throughout October, 0.79" (20mm) of precipitation is accumulated.

When does it start snowing in Westby?

October is the first month it typically snows in Westby, Montana. Throughout October, in the average 3.2 snowfall days, it receives 1.57" (40mm) of snow.

What is the average length of the day in October in Westby?

In Westby, Montana, the average length of the day in October is 10.8h.

How long on average sun shines in October in Westby?

In October, the average sunshine is 6.1h.

What is the UV index intensity in October in Westby?

In October, the average daily maximum UV index in Westby, Montana, is 2. A UV Index value of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays.

Average temperature in October
Westby, MT

Average temperature in October - Westby, MT
  • Average high temperature in October: 52.7°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is February (19.8°F).

  • Average low temperature in October: 37.9°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is February (6.3°F).

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Average pressure in October
Westby, MT

Average pressure in October - Westby, MT
  • Average pressure in October: 29.96"

The month with the highest atmospheric pressure is February (30.17").
The month with the lowest atmospheric pressure is June (29.83").

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Average wind speed in October
Westby, MT

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

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is February (9.2mph).

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Average humidity in October
Westby, MT

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

Months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is August (46%).

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Average rainfall in October
Westby, MT

Average rainfall in October - Westby, MT
  • Average rainfall in October: 0.79"

The wettest month (with the highest rainfall) is June (2.17").
The driest month (with the least rainfall) is February (0.47").

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Average rainfall days in October
Westby, MT

Average rainfall days in October - Westby, MT
  • Average rainfall days in October: 7.6 days

The month with the highest number of rainy days is June (13.9 days).
The month with the least rainy days is February (2.6 days).

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Average snowfall in October
Westby, MT

Average snowfall in October - Westby, MT
  • Average snowfall in October: 1.57"

The month with the highest snowfall is November (3.74").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Westby, MT

Average snowfall days in October - Westby, MT
  • Average snowfall days in October: 3.2 days

The month with the highest number of snowfall days is February (13.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in October / Average sunshine in October - Westby, MT
  • Average daylight in October: 10.8h

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.3h).

  • Average sunshine in October: 6.1h

The month with the most sunshine is July (Average sunshine: 11.7h).
The month with the least sunshine is February (Average sunshine: 3.9h).

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Average sunshine days in October
Westby, MT

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

The month with the most sunshine days is August (20.1 days).
Months with the least sunshine days are February and June (13.8 days).

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Average UV index in October
Westby, MT

Average UV index in October - Westby, MT
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in October
Westby, MT

Average cloud cover in October - Westby, MT
  • Average cloud cover in October: 36

The month with the most cloud cover is February (Cloud cover 60).
Months with the least cloud cover are July and August (Cloud cover 19).

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Average visibility in October
Westby, MT

Average visibility in October - Westby, MT
  • Average visibility in October: 6mi

Months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January, February, March and December (5mi).

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