October weather forecast
Sisters, OR

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Weather in October

October in Sisters, Oregon recognizes the onset of a clear autumnal phase. The temperature comfortably nests at a cooler 55.8°F (13.2°C). The month characteristically dots the weather map with a smattering of rainfall events. Wind speed picks up the pace, claiming dominance after the lull of summer. A rise in humidity tags along, remaining in sync with reduced daylight hours, describing a contrasting atmospheric transition from the dry end of summer.

Temperature

Sisters, Oregon, experiences a temperature shift at the start of October, with average high-temperatures adjusting from an agreeable 69.8°F (21°C) in September to a moderate 55.8°F (13.2°C). Sisters's temperature tends to fall to an average low of 38.5°F (3.6°C) during the nights of October.

Humidity

In October, the average relative humidity is 68%.

Rainfall

In Sisters, during October, the rain falls for 12.7 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Sisters, during the entire year, the rain falls for 142.1 days and collects up to 22.87" (581mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. In Sisters, in October, snow falls for 1.4 days, with typically accumulated 0.71" (18mm) of snow. Throughout the year, in Sisters, there are 70.7 snowfall days, and 60.04" (1525mm) of snow is accumulated.

Daylight

In October, the average length of the day in Sisters is 10h and 58min.
On the first day of October in Sisters, sunrise is at 7:04 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:56 pm PDT.

Sunshine

In October, the average sunshine is 6.5h.

UV index

The average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 3 during October translates into the following directions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Frequently asked questions

What are October temperatures in Sisters?

The average high-temperature, in October, in Sisters, is 55.8°F (13.2°C), while the average low-temperature is 38.5°F (3.6°C).

What is the average humidity in October in Sisters?

In Sisters, Oregon, the average relative humidity in October is 68%.

How much does it rain in Sisters in October?

In Sisters, in October, during 12.7 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

How much does it snow in Sisters in October?

In October, it is snowing for 1.4 days. Throughout October, 0.71" (18mm) of snow is accumulated.

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

The average day length in October in Sisters is 10h and 58min.

When are sunrise and sunset in October in Sisters?

On the first day of October in Sisters, sunrise is at 7:04 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:56 pm PDT.

How long on average sun shines in October in Sisters?

The average sunshine duration in October in Sisters is 6.5h.

What is the UV index intensity in October in Sisters?

The average daily maximum UV index in October in Sisters, Oregon, is 3. A UV Index reading of 3 to 5 represents a medium health risk 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
Sisters, OR

Average temperature in October - Sisters, OR
  • Average high temperature in October: 55.8°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 (36.5°F).

  • Average low temperature in October: 38.5°F

The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).

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Average pressure in October
Sisters, OR

Average pressure in October - Sisters, OR
  • Average pressure in October: 30.06"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).

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Average wind speed in October
Sisters, OR

Average wind speed in October - Sisters, OR
  • Average wind speed in October: 5.2mph

The windiest month (with the highest average wind speed) is February (6.1mph).
The calmest months (with the lowest average wind speed) are August and September (4.8mph).

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Average humidity in October
Sisters, OR

Average humidity in October - Sisters, OR
  • Average humidity in October: 68%

The month with the highest relative humidity is December (84%).
The months with the lowest relative humidity are July and August (53%).

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Average rainfall in October
Sisters, OR

Average rainfall in October - Sisters, OR
  • Average rainfall in October: 1.73"

The wettest month (with the highest rainfall) is January (3.31").
The driest month (with the least rainfall) is July (0.35").

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Average rainfall days in October
Sisters, OR

Average rainfall days in October - Sisters, OR
  • Average rainfall days in October: 12.7 days

The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is July (5 days).

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Average snowfall in October
Sisters, OR

Average snowfall in October - Sisters, OR
  • Average snowfall in October: 0.71"

The month with the highest snowfall is February (13.74").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in October
Sisters, OR

Average snowfall days in October - Sisters, OR
  • Average snowfall days in October: 1.4 days

The month with the highest number of snowfall days is December (14.7 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
Sisters, OR

Average daylight in October / Average sunshine in October - Sisters, OR
  • Average daylight in October: 11h and 0min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in October: 6h and 3min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in October
Sisters, OR

Average sunshine days in October - Sisters, OR
  • Average sunshine days in October: 15.7 days

The month with the most sunshine days is July (23.3 days).
The month with the least sunshine days is March (8.1 days).

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Average UV index in October
Sisters, OR

Average UV index in October - Sisters, OR
  • Average UV index in October: 3

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
Sisters, OR

Average cloud cover in October - Sisters, OR
  • Average cloud cover in October: 32

The months with the most cloud cover are January, February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 11).

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Average visibility in October
Sisters, OR

Average visibility in October - Sisters, OR
  • Average visibility in October: 6mi

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

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Sisters, Oregon, USA

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