Climate and monthly weather forecast
Snoqualmie Pass, WA

Weather in January

January in Snoqualmie Pass, Washington, is a wintry winter month, with an average temperature fluctuating between 21.4°F (-5.9°C) and 32°F (0°C). In Snoqualmie Pass, the average high-temperature in January is relatively the same as in December - a cold 32°F (0°C). Weather in January »

Weather in February

February, the last month of the winter in Snoqualmie Pass, is also a subzero cold month, with temperature in the range of an average low of 21.2°F (-6°C) and an average high of 31.8°F (-0.1°C). In Snoqualmie Pass, the average high-temperature in February is essentially the same as in January - a subzero cold 31.8°F (-0.1°C). Weather in February »

Weather in March

March, the first month of the spring in Snoqualmie Pass, is a wintry month, with an average temperature fluctuating between 37°F (2.8°C) and 24.6°F (-4.1°C). In Snoqualmie Pass, the average high-temperature in March is relatively the same as in February - a wintry 37°F (2.8°C). Weather in March »

Weather in April

April is a frosty spring month in Snoqualmie Pass, Washington, with an average temperature varying between 29.3°F (-1.5°C) and 43.7°F (6.5°C). In Snoqualmie Pass, the average high-temperature in April slightly increases from a cold 37°F (2.8°C) in March to a frosty 43.7°F (6.5°C). Weather in April »

Weather in May

The last month of the spring, May, is a fresh month in Snoqualmie Pass, Washington, with temperature in the range of an average high of 54.7°F (12.6°C) and an average low of 36.1°F (2.3°C). In Snoqualmie Pass, the average high-temperature in May rises from a frosty 43.7°F (6.5°C) in April to a fresh 54.7°F (12.6°C). Weather in May »

Weather in June

The first month of the summer, June, is a mild month in Snoqualmie Pass, Washington, with an average temperature varying between 39.7°F (4.3°C) and 60.4°F (15.8°C). In Snoqualmie Pass, the average high-temperature in June marginally rises from a fresh 54.7°F (12.6°C) in May to a moderate 60.4°F (15.8°C). Weather in June »

Weather in July

July in Snoqualmie Pass, Washington, is an agreeable summer month, with temperature in the range of an average high of 70.3°F (21.3°C) and an average low of 43.7°F (6.5°C). In July, the average high-temperature rises from a moderate 60.4°F (15.8°C) in June to a pleasant 70.3°F (21.3°C). Weather in July »

Weather in August

The last month of the summer, August, is another pleasant month in Snoqualmie Pass, Washington, with temperature in the range of an average low of 45°F (7.2°C) and an average high of 71.2°F (21.8°C). With an average high-temperature of 71.2°F (21.8°C) and an average low-temperature of 45°F (7.2°C), August is the warmest month. Weather in August »

Weather in September

September, the first month of the autumn in Snoqualmie Pass, is still a comfortable month, with temperature in the range of an average low of 41.2°F (5.1°C) and an average high of 62.1°F (16.7°C). In Snoqualmie Pass, the average high-temperature in September decreases from an agreeable 71.2°F (21.8°C) in August to a comfortable 62.1°F (16.7°C). Weather in September »

Weather in October

October, like September, is another chilly autumn month in Snoqualmie Pass, Washington, with an average temperature varying between 49.1°F (9.5°C) and 34.7°F (1.5°C). In October, the average high-temperature decreases from an enjoyable 62.1°F (16.7°C) in September to a frosty 49.1°F (9.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cold month in Snoqualmie Pass, Washington, with an average temperature varying between 37°F (2.8°C) and 27.5°F (-2.5°C). In November, the average high-temperature decreases from a frosty 49.1°F (9.5°C) in October to a wintry 37°F (2.8°C). Weather in November »

Weather in December

December, the first month of the winter in Snoqualmie Pass, is still a freezing cold month, with an average temperature ranging between max 30.2°F (-1°C) and min 20.3°F (-6.5°C). With an average high-temperature of 30.2°F (-1°C) and an average low-temperature of 20.3°F (-6.5°C), December is the coldest month. Weather in December »
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FAQ

What are the most humid months in Snoqualmie Pass?

The months with the highest humidity are January and February, with an average relative humidity of 93%.

What is the wettest month in Snoqualmie Pass?

January is the month with the most rainfall in Snoqualmie Pass. Rain falls for 6.8 days and accumulates 4.21" (107mm) of precipitation.

How many days does it rain in Snoqualmie Pass?

Throughout the year, there are 127.9 rainfall days, and 28.58" (726mm) of precipitation is accumulated.

When does it snow in Snoqualmie Pass?

Months with snowfall are January through June, September through December.

When does it snow the most in Snoqualmie Pass?

The month with the most snowfall in Snoqualmie Pass, Washington, is January, when snow falls for 20.3 days and typically aggregates up to 27.72" (704mm) of snow.

How many days does it snow in Snoqualmie Pass?

In Snoqualmie Pass, Washington, during the entire year, snow falls for 135.3 days and aggregates up to 134.33" (3412mm) of snow.

What is the month with the least sunshine in Snoqualmie Pass?

The months with the least sunshine in Snoqualmie Pass, Washington, are January and February, with an average of 3h of sunshine.

What are the months with the lowest UV index in Snoqualmie Pass?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Snoqualmie Pass.

When is Daylight Saving Time (DST) in Snoqualmie Pass?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Snoqualmie Pass, Washington, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from PDT to PST.

When are the longest days in Snoqualmie Pass?

With an average of 15h and 53min of daylight, June has the longest days of the year in Snoqualmie Pass.

What is the least humid month in Snoqualmie Pass?

The least humid month in Snoqualmie Pass is July, with an average relative humidity of 69%.

What is the driest month in Snoqualmie Pass?

July is the month with the least rainfall in Snoqualmie Pass, Washington. Rain falls for 9.1 days and accumulates 0.51" (13mm) of precipitation.

When it does not snow in Snoqualmie Pass?

In Snoqualmie Pass, snow does not fall in July and August.

What is the month with the highest UV index in Snoqualmie Pass?

The month with the highest UV index in Snoqualmie Pass, Washington, is July, with an average maximum UV index of 5.

What is the warmest month in Snoqualmie Pass?

The warmest month in Snoqualmie Pass is August, with an average high-temperature of 71.2°F (21.8°C) and an average low-temperature of 45°F (7.2°C).

What month has the most sunshine in Snoqualmie Pass?

August has the most sunshine of the year, with an average of 10.9h of sunshine.

What is the coldest month in Snoqualmie Pass?

December is the coldest month in Snoqualmie Pass, with an average high-temperature of 30.2°F (-1°C) and an average low-temperature of 20.3°F (-6.5°C).

What is the month with the shortest days in Snoqualmie Pass?

December has the shortest days of the year in Snoqualmie Pass, Washington, with an average of 8h and 32min of daylight.

Average temperature
Snoqualmie Pass, WA

Average temperature - Snoqualmie Pass, WA

The warmest month (with the highest average high temperature) is August (71.2°F).
The month with the lowest average high temperature is December (30.2°F).

The month with the highest average low temperature is August (45°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).

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Average pressure
Snoqualmie Pass, WA

Average pressure - Snoqualmie Pass, WA

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).

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Average wind speed
Snoqualmie Pass, WA

Average wind speed - Snoqualmie Pass, WA

The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).

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Average humidity
Snoqualmie Pass, WA

Average humidity - Snoqualmie Pass, WA

The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is July (69%).

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Average rainfall
Snoqualmie Pass, WA

Average rainfall - Snoqualmie Pass, WA

The wettest month (with the highest rainfall) is January (4.21").
The driest month (with the least rainfall) is July (0.51").

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Average rainfall days
Snoqualmie Pass, WA

Average rainfall days - Snoqualmie Pass, WA

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (6.8 days).

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Average snowfall
Snoqualmie Pass, WA

Average snowfall - Snoqualmie Pass, WA

The month with the highest snowfall is January (27.72").
The months with the least snowfall are July and August (0").

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Average snowfall days
Snoqualmie Pass, WA

Average snowfall days - Snoqualmie Pass, WA

The month with the highest number of snowfall days is December (22.3 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight / Average sunshine
Snoqualmie Pass, WA

Average daylight / Average sunshine - Snoqualmie Pass, WA

The month with the longest days is June (Average daylight: 15h and 53min).
The month with the shortest days is December (Average daylight: 8h and 32min).

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 0min).

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Average sunshine days
Snoqualmie Pass, WA

Average sunshine days - Snoqualmie Pass, WA

The month with the most sunshine days is August (20.2 days).
The month with the least sunshine days is February (6 days).

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Average UV index
Snoqualmie Pass, WA

Average UV index - Snoqualmie Pass, WA

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average visibility
Snoqualmie Pass, WA

Average visibility - Snoqualmie Pass, WA

The months with the highest visibility are June, July and August (5mi).
The months with the lowest visibility are January, February, March and December (3mi).

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