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

In North Cascades National Park, the onset of June comes with a modest high-temperature shift, transitioning from May's mild 55.4°F (13°C) to a comfortable 62.6°F (17°C). North Cascades National Park experiences a dramatic descent in temperature during June, with the average nighttime reading settling 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, 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 June, sunrise is at 5:05 am and sunset at 9:00 pm. On the last day of the month, sunrise is at 5:06 am and sunset at 9:11 pm PDT.

Sunshine

In North Cascades National Park, the average sunshine in June is 8h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In June, the maximum UV index of 7 suggests these recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Employ a wide-brim hat for potent defense against up to 50% of UV rays.