June weather forecast
North Cascades National Park, WA

June sets the stage for ideal hiking conditions in North Cascades National Park, with minimal rainfall and a mere 11 rainy days. There’s a marked increase in temperatures bringing much-needed warmth. This period represents the pivot towards summer, with longer daylight hours and a notable rise in UV index. Rainfall is at its second lowest for the year, which along with the increased temperature, creates a conducive atmosphere for various outdoor activities. The environment is ripe for hiking, picnicking, and camping, with an abundance of flora and fauna on display.

Temperature

June introduces a marginal temperature uplift, with average high-temperatures adjusting from May's moderate 55.4°F (13°C) to a still refreshing 62.6°F (17°C). June is characterized by a distinct thermal shift, with nighttime lows averaging at an icy 41°F (5°C).

Rainfall

In North Cascades National Park, in June, during 11 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. Throughout the year, in North Cascades National Park, there are 157 rainfall days, and 51.02" (1296mm) of precipitation is accumulated.

Daylight

The month with the longest days in North Cascades National Park is June, with an average of 16h and 6min of daylight.
On the first day of the month, sunrise is at 5:05 am and sunset at 9:00 pm. On the last day of June, sunrise is at 5:06 am and sunset at 9:11 pm PDT.

Sunshine

The average sunshine in June is 8h.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index in North Cascades National Park. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: An average UV index of 7 in June transforms into this advice:
Guard against overexposure. Protection from sun-induced harm is essential. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.