Lone Mountain Fire - National Park Service Trail Closures
The Lone Mountain Fire in North Cascades National Park is approximately 5 mi NW of Stehekin in the Boulder Creek drainage. Boulder Creek Trail is closed. More »
USFS Access Road and Trail Closures
The following USFS trails providing backcountry access to the park service complex are closed due to Lone Mountain and Carlton Complex Fires: Twisp Pass, South Creek, Reynolds Creek, War Creek, Summit. The Twisp River Road is closed west of Eagle Creek. More »
Weather in the North Cascades varies greatly depending season and location. From autumn to spring much of the park is buried under a thick layer of snow. The most accommodating weather is from mid-June to late-September, when all but the highest trails are generally clear of snow. The west slopes and high peaks catch the brunt of wet systems blowing in from the Pacific Ocean creating a more lush and temperate evergreen forest, while the shielded lower east slopes tend to be warm and dry throughout the summer.
The difference between west and east is so great that the western slopes receive an average of 76 more inches of precipitation and 407 more inches of snowfall annually. So much snow falls in the mountains that State Route 20—the only road that traverses the park from east to west—is closed every winter for four or more months. During an average year heavy snow and continuous avalanches bury the highway beyond Ross Lake Trailhead from mid-November to April. Only once (1976-77) in its more than 30-year history has the route remained open through the entire winter. No matter what time of year, visitors entering the North Cascades should remember that mountain weather is unpredictable and prone to sudden changes. Even in the summer storms are common. Especially those visitors who plan and traveling into the backcountry should be prepared for adverse conditions. Warm, waterproof clothing is all but required year-round ... just in case.
Did You Know?
The North Cascades are well known for the abundant waterfalls that lace the mountains. Two of the best known waterfalls are Gorge Falls between Newhalem and Diablo along State Route 20 and Rainbow Falls in the Stehekin Valley.