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

The shift from May to June is marked by a slight increase in the average high-temperature, moving from a moderate 55.4°F to an enjoyable 62.6°F. The significant decline in North Cascades National Park's temperature, from day to night, averages of 41°F in June.

Rainfall

In North Cascades National Park, during June, the rain falls for 11 days and regularly aggregates up to 2.24" of precipitation. In North Cascades National Park, Washington, during the entire year, the rain falls for 157 days and collects up to 51.02" of precipitation.

Daylight

With an average of 16h and 6min of daylight, June has the longest days of the year in North Cascades National Park.
On the first day of June, sunrise is at 5:06 am and sunset at 8:59 pm. On the last day of the month, sunrise is at 5:05 am and sunset at 9:12 pm PDT.

Sunshine

In North Cascades National Park, 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 threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 7 during June translates into the following guidance:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. 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. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.