January weather forecast
Snoqualmie Pass, WA

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Weather in January

Characteristic of weather patterns in Snoqualmie Pass, Washington, in January indicates a blend of low mercury levels and high snowfall. The temperatures attain their nadir, posting an average high of 32°F (0°C) and a low of 21.4°F (-5.9°C). Retreating from the bitterness of cold, the sun has limited appearances making it the least sunlit month of the year, pushing people indoors for most days. Snow lovers rejoice as the January snow blankets the city with an average more than two feet of snow. Undeniably, the month shows its true winter character and defines the chilling tone for the coming months.

Temperature

January reports an average high-temperature of a cold 32°F (0°C), slightly varied from December's 30.2°F (-1°C). Snoqualmie Pass's average low-temperature for the month of January records at a freezing cold 21.4°F (-5.9°C).

Humidity

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

Rainfall

The month with the most rainfall is January, when the rain falls for 6.8 days and typically aggregates up to 4.21" (107mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. January is the month with the most snowfall. Snow falls for 20.3 days and accumulates 27.72" (704mm) of snow.

Daylight

The average length of the day in January in Snoqualmie Pass, Washington, is 8h and 59min.
On the first day of January in Snoqualmie Pass, sunrise is at 7:52 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:05 pm PST.

Sunshine

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

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, the maximum UV index of 1 translates into these guidelines:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.

Frequently asked questions

How cold is it in January?

The average high-temperature and low-temperature during January are 32°F (0°C) and 21.4°F (-5.9°C) respectively.

What are the most humid months?

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

What is the average humidity in January?

In Snoqualmie Pass, the average relative humidity in January is 93%.

What is the wettest month?

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

How much does it rain in January?

In Snoqualmie Pass, in January, during 6.8 rainfall days, 4.21" (107mm) of precipitation is typically accumulated.

When does it snow the most in Snoqualmie Pass?

January is the month with the most snowfall. Snow falls for 20.3 days and accumulates 27.72" (704mm) of snow.

How much does it snow in January?

In Snoqualmie Pass, in January, snow falls for 20.3 days, with typically accumulated 27.72" (704mm) of snow.

How many hours of daylight does Snoqualmie Pass have in January?

In Snoqualmie Pass, the average day length in January is 8h and 59min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:52 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:05 pm PST.

What are the months with the least sunshine?

January and February, with an average of 3h of sunshine, are months with the least sunshine.

How many hours of sunshine does Snoqualmie Pass have in January?

In January, the average sunshine duration is 3h.

What is the month with the lowest UV index?

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

How high is the UV index in January?

In Snoqualmie Pass, the average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from exposure to Sun's UV rays.
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 January
Snoqualmie Pass, WA

Average temperature in January - Snoqualmie Pass, WA
  • Average high temperature in January: 32°F

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).

  • Average low temperature in January: 21.4°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).

Average pressure in January
Snoqualmie Pass, WA

Average pressure in January - Snoqualmie Pass, WA
  • Average pressure in January: 30.13"Hg

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

Average wind speed in January
Snoqualmie Pass, WA

Average wind speed in January - Snoqualmie Pass, WA
  • Average wind speed in January: 5mph

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).

Average humidity in January
Snoqualmie Pass, WA

Average humidity in January - Snoqualmie Pass, WA
  • Average humidity in January: 93%

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

Average rainfall in January
Snoqualmie Pass, WA

Average rainfall in January - Snoqualmie Pass, WA
  • Average rainfall in January: 4.21"

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

Average rainfall days in January
Snoqualmie Pass, WA

Average rainfall days in January - Snoqualmie Pass, WA
  • Average rainfall days in January: 6.8 days

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).

Average snowfall in January
Snoqualmie Pass, WA

Average snowfall in January - Snoqualmie Pass, WA
  • Average snowfall in January: 27.72"

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

Average snowfall days in January
Snoqualmie Pass, WA

Average snowfall days in January - Snoqualmie Pass, WA
  • Average snowfall days in January: 20.3 days

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).

Average daylight in January /
Average sunshine in January
Snoqualmie Pass, WA

Average daylight in January / Average sunshine in January - Snoqualmie Pass, WA
  • Average daylight in January: 9h and 0min

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 30min).

  • Average sunshine in January: 3h and 0min

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).

Average sunshine days in January
Snoqualmie Pass, WA

Average sunshine days in January - Snoqualmie Pass, WA
  • Average sunshine days in January: 8.9 days

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

Average UV index in January
Snoqualmie Pass, WA

Average UV index in January - Snoqualmie Pass, WA
  • Average UV index in January: 1

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).

Average cloud cover in January
Snoqualmie Pass, WA

Average cloud cover in January - Snoqualmie Pass, WA
  • Average cloud cover in January: 69

The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in January
Snoqualmie Pass, WA

Average visibility in January - Snoqualmie Pass, WA
  • Average visibility in January: 3mi

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).

Snoqualmie Pass, Washington, USA

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