April weather forecast
North Cascades National Park, WA

April comes with significant changes that start to transform the landscape of North Cascades National Park. The temperature swings between 28°F (-2.2°C) to 48°F (8.9°C) and there is a distinct warmth in the air and in the increasing sunshine hours. Spring is in its full glory as snow continues to retreat and the temperatures gradually rise. April marks a period of lower precipitation with rainfall almost half compared to the previous months. This period allows for heightened exploration of the park's trails that were previously inaccessible due to snow.

Temperature

April signals a minor shift in the average high-temperature, moving from March's cold 41°F (5°C) to a frosty 48.2°F (9°C). During the nights in April, the temperature averages to a freezing cold 28.4°F (-2°C).

Rainfall

In North Cascades National Park, in April, it is raining for 12 days, with typically 3.07" (78mm) 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

In North Cascades National Park, the average length of the day in April is 13h and 44min.
On the first day of April, sunrise is at 6:40 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:19 pm PDT.

Sunshine

In April, the average sunshine in North Cascades National Park is 6h.

UV index

In April, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 5 in April interprets into the following recommendations:
Exercise prevention - Warding off sunburn is urged. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.