October weather forecast
Summit, WA

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Weather in October

October, like September, is another refreshing autumn month in Summit, Washington, with an average temperature ranging between max 58.3°F (14.6°C) and min 43.2°F (6.2°C).

Temperature

The onset of October entails a temperature shift, as the average high-temperature decreases from a pleasant 69.6°F (20.9°C) in September to a mild 58.3°F (14.6°C). Nighttime temperatures in Summit hover around an average low of 43.2°F (6.2°C) in October.

Humidity

The average relative humidity in October is 80%.

Rainfall

In October, the rain falls for 16.2 days. Throughout October, 3.74" (95mm) of precipitation is accumulated. Throughout the year, there are 183.4 rainfall days, and 32.48" (825mm) of precipitation is accumulated.

Snowfall

In Summit, snow does not fall in April through October.

Daylight

The average length of the day in October in Summit is 10h and 51min.
On the first day of the month, sunrise is at 7:09 am and sunset at 6:48 pm. On the last day of October, sunrise is at 7:52 am and sunset at 5:53 pm PDT.

Sunshine

In Summit, the average sunshine in October is 5.5h.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Summit. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: A daily high UV index of 2 in October leads to these guidelines:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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Frequently asked questions

What is the temperature in October in Summit?

Summit in October has an average high-temperature of 58.3°F (14.6°C) and an average low-temperature of 43.2°F (6.2°C).

What is the average humidity in October in Summit?

The average relative humidity in October in Summit, Washington, is 80%.

How many days does it rain in October in Summit?

In Summit, in October, during 16.2 rainfall days, 3.74" (95mm) of precipitation is typically accumulated.

When it does not snow in Summit?

April through October are months without snowfall in Summit, Washington.

Does it snow in Summit in October?

In Summit, in October, it doesn't snow. In November, it regularly snows.

How many hours of daylight does Summit have in October?

In October, the average day length in Summit is 10h and 51min.

When is the sunrise / sunset in October in Summit?

In October, on the first day of the month, sunrise is at 7:09 am and sunset at 6:48 pm. On the last day of the month, in Summit, Washington, sunrise is at 7:52 am and sunset at 5:53 pm PDT.

How many hours of sunshine does Summit have in October?

In October, the average sunshine duration in Summit is 5.5h.

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

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

What is the UV index reading in October in Summit?

The average daily maximum UV index in October in Summit, Washington, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Summit, WA

Average temperature in October - Summit, WA
  • Average high temperature in October: 58.3°F

The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (42.8°F).

  • Average low temperature in October: 43.2°F

The month with the highest average low temperature is August (51.6°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).

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Average pressure in October
Summit, WA

Average pressure in October - Summit, WA
  • Average pressure in October: 30.04"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in October
Summit, WA

Average wind speed in October - Summit, WA
  • Average wind speed in October: 4.2mph

The windiest month (with the highest average wind speed) is March (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

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Average humidity in October
Summit, WA

Average humidity in October - Summit, WA
  • Average humidity in October: 80%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in October
Summit, WA

Average rainfall in October - Summit, WA
  • Average rainfall in October: 3.74"

The wettest month (with the highest rainfall) is December (4.92").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days in October
Summit, WA

Average rainfall days in October - Summit, WA
  • Average rainfall days in October: 16.2 days

The month with the highest number of rainy days is March (21 days).
The month with the least rainy days is August (6.2 days).

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Average snowfall in October
Summit, WA

Average snowfall in October - Summit, WA
  • Average snowfall in October: 0"

The month with the highest snowfall is February (1.42").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in October
Summit, WA

Average snowfall days in October - Summit, WA
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in October /
Average sunshine in October
Summit, WA

Average daylight in October / Average sunshine in October - Summit, WA
  • Average daylight in October: 10h and 5min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in October: 5h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

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Average sunshine days in October
Summit, WA

Average sunshine days in October - Summit, WA
  • Average sunshine days in October: 13.4 days

The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is February (8.2 days).

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Average UV index in October
Summit, WA

Average UV index in October - Summit, WA
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

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Average cloud cover in October
Summit, WA

Average cloud cover in October - Summit, WA
  • Average cloud cover in October: 44

The months with the most cloud cover are January and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in October
Summit, WA

Average visibility in October - Summit, WA
  • Average visibility in October: 5mi

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

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Summit, Washington, USA

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