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 to 48°F 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

The arrival of April in North Cascades National Park introduces a minor uplift in high-temperatures, adjusting from a cold 41°F in March to a chilly 48.2°F. Throughout April, the average low-temperature dips to a freezing cold 28.4°F.

Rainfall

In North Cascades National Park, Washington, during April, the rain falls for 12 days and regularly aggregates up to 3.07" of precipitation. In North Cascades National Park, during the entire year, the rain falls for 157 days and collects up to 51.02" of precipitation.

Daylight

In North Cascades National Park, the average length of the day in April is 13h and 44min.
On the first day of the month, sunrise is at 6:42 am and sunset at 7:35 pm. On the last day of April, sunrise is at 5:46 am and sunset at 8:18 pm PDT.

Sunshine

The average sunshine in April is 6h.

UV index

In North Cascades National Park, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In April, the maximum UV index of 5 translates into these guidelines:
Be vigilant - Preventing sunburn is recommended. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.