October weather forecast
Sisters, OR

Weather in October

October, the same as September, in Sisters, Oregon, is a moderate autumn month, with an average temperature fluctuating between 38.5°F (3.6°C) and 55.8°F (13.2°C).

Temperature

In Sisters, Oregon, the average high-temperature in October drops from an agreeable 69.8°F (21°C) in September to a mild 55.8°F (13.2°C). The average low-temperature, in October, is 38.5°F (3.6°C).

Humidity

The average relative humidity in October is 68%.

Rainfall

In Sisters, during October, the rain falls for 12.7 days and regularly aggregates up to 1.73" (44mm) of precipitation. Throughout the year, in Sisters, Oregon, there are 142.1 rainfall days, and 22.87" (581mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In October, it is snowing for 1.4 days. Throughout October, 0.71" (18mm) of snow is accumulated. In Sisters, during the entire year, snow falls for 70.7 days and aggregates up to 60.04" (1525mm) of snow.

Daylight

In Sisters, the average length of the day in October is 10h and 58min.
On the first day of October, sunrise is at 7:04 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:57 pm PDT.

Sunshine

In Sisters, the average sunshine in October is 6.5h.

UV index

In Sisters, Oregon, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 3 in October interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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 average humidity in October in Sisters?

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

How many days does it rain in October in Sisters?

In Sisters, Oregon, during October, the rain falls for 12.7 days and regularly aggregates up to 1.73" (44mm) of precipitation.

How much does it snow in Sisters in October?

In Sisters, Oregon, in October, snow falls for 1.4 days, with typically accumulated 0.71" (18mm) of snow.

How many hours of daylight does Sisters have in October?

In October, the average day length in Sisters is 10h and 58min.

When is the sunrise / sunset in October in Sisters?

In October, on the first day of the month, sunrise is at 7:04 am and sunset at 6:47 pm. On the last day of the month, in Sisters, sunrise is at 7:42 am and sunset at 5:57 pm PDT.

How many hours of sunshine does Sisters have in October?

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 is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
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
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: 10h and 58min

The month with the longest days is June (Average daylight: 15h and 28min).
The month with the shortest days is December (Average daylight: 8h and 55min).

  • Average sunshine in October: 6h and 30min

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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