January weather forecast
North Cascades National Park, WA

January in North Cascades National Park is frequently accompanied by varying degrees of cold weather. Temperatures fluctuate from 18°F (-7.8°C) to 30°F (-1.1°C) making it a chilly start to the year. It is the coldest month of the year, and while the park remains exquisitely beautiful under a blanket of snow, it’s important to dress in layer and be prepared for icy conditions. The limited sunshine hours, which are the lowest throughout the year, can also likely affect plans for outdoor activities. Rainfall is expected throughout the month, with an average of 17 rainy days in total.

Temperature

The temperature hits its lowest levels in January and December, recording an average high-temperature of 30.2°F (-1°C).

Rainfall

In North Cascades National Park, in January, it is raining for 17 days, with typically 7.6" (193mm) of accumulated precipitation. Throughout the year, in North Cascades National Park, there are 157 rainfall days, and 51.02" (1296mm) of precipitation is accumulated.

Daylight

The average length of the day in January is 8h and 49min.
On the first day of the month, sunrise is at 7:58 am and sunset at 4:19 pm. On the last day of January, in North Cascades National Park, sunrise is at 7:36 am and sunset at 5:00 pm PST.

Sunshine

January, November and December, with an average of 2h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index in North Cascades National Park are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 1 in January, converts into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Boost your sun resistance with garments that are densely woven yet spacious.