January weather forecast and climate
North Cascades National Park, WA

The lovely Picture Lake reflecting the trees on the shores and the distant Mount Shuksan in the North Cascades National Park, Washington, USA
The lovely Picture Lake reflecting the trees on the shores and the distant Mount Shuksan in the North Cascades National Park, Washington, USA

Weather in January

January, like December, is a freezing cold winter month in North Cascades National Park, Washington, with average temperature fluctuating between 30.2°F (-1°C) and 17.6°F (-8°C).

Temperature

January and December, with an average high-temperature of 30.2°F (-1°C), are the coldest months.

Rainfall

In January, the rain falls for 17 days. Throughout January, 7.6" (193mm) of precipitation is accumulated. In North Cascades National Park, during the entire year, the rain falls for 157 days and collects up to 51.02" (1296mm) of precipitation.

Daylight

In January, the average length of the day is 8.8h.

Sunshine

January, November and December, with an average of 2h of sunshine, are months with the least sunshine in North Cascades National Park.

UV index

Months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In January, the average maximum UV index of 1 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What are the coldest months in North Cascades National Park?

January and December, with an average high-temperature of 30.2°F (-1°C), are the coldest months in North Cascades National Park.

What is the temperature in January in North Cascades National Park?

In January, in North Cascades National Park, Washington, the average high-temperature is 30.2°F (-1°C), and the average low-temperature is 17.6°F (-8°C).

How much does it rain in North Cascades National Park in January?

In January, in North Cascades National Park, Washington, the rain falls for 17 days. Throughout January, 7.6" (193mm) of precipitation is accumulated.

How many hours of daylight does North Cascades National Park have in January?

In January, the average length of the day is 8.8h.

What is the month with the least sunshine in North Cascades National Park?

Months with the least sunshine in North Cascades National Park, Washington, are January, November and December, with an average of 2h of sunshine.

How many hours of sunshine does North Cascades National Park have in January?

The average sunshine in January is 2h.

What is the month with the lowest UV index in North Cascades National Park?

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

What is the UV index reading in January in North Cascades National Park?

In January, the average daily maximum UV index in North Cascades National Park, Washington, is 1. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to the UV radiation.

Average temperature in January
North Cascades National Park, WA

Average temperature in January - North Cascades National Park, WA
  • Average high temperature in January: 30°F

The warmest months (with the highest average high temperature) are July and August (70°F).
Months with the lowest average high temperature are January and December (30°F).

  • Average low temperature in January: 18°F

Months with the highest average low temperature are July and August (45°F).
The coldest months (with the lowest average low temperature) are January and December (18°F).

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Average rainfall in January
North Cascades National Park, WA

Average rainfall in January - North Cascades National Park, WA
  • Average rainfall in January: 7.6"

The wettest month (with the highest rainfall) is December (7.8").
The driest months (with the least rainfall) are July and August (1.7").

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Average rainfall days in January
North Cascades National Park, WA

Average rainfall days in January - North Cascades National Park, WA
  • Average rainfall days in January: 17 days

The month with the highest number of rainy days is December (18 days).
The month with the least rainy days is July (8 days).

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Average daylight in January /
Average sunshine in January
North Cascades National Park, WA

Average daylight in January / Average sunshine in January - North Cascades National Park, WA
  • Average daylight in January: 8.8h

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.4h).

  • Average sunshine in January: 2h

The month with the most sunshine is July (Average sunshine: 9h).
Months with the least sunshine are January, November and December (Average sunshine: 2).

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Average UV index in January
North Cascades National Park, WA

Average UV index in January - North Cascades National Park, WA
  • Average UV index in January: 1

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).

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