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

January and December bring North Cascades National Park's lowest average temperatures, reaching a high 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. 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 North Cascades National Park, Washington, 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, 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 are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high UV index of 1 in January translates into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.