Warm, waterproof clothing is all but required year-round. Especially those visitors who plan and traveling into the backcountry should be prepared for adverse conditions. No matter what time of year, visitors entering the North Cascades should remember that mountain weather is unpredictable and prone to sudden changes. Only once (1976-77) in its more than 30-year history has the route remained open through the entire winter. During an average year heavy snow and continuous avalanches bury the highway beyond Ross Lake Trailhead from mid-November to April. 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. The month with the most days of snow alone in Cascade Valley is December. 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. and Average Weather Year Round in Cascade Valley Washington, United States. 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 most accommodating weather is from mid-June to late-September, when all but the highest trails are generally clear of snow. From autumn to spring much of the park is buried under a thick layer of snow. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.Weather in the North Cascades varies greatly depending season and location. Note: This information was accurate when it was published, but can change without notice. Winter is not to be underestimated in this park, and Wash. The deeper into the backcountry you go, the fewer people you are likely to encounter. Ross Lake is thicker with boaters on summer holiday weekends, and the heaviest load of visitors all year is in Stehekin and the Cascade Pass area during July and August. You're more likely to run into folks on the Big Beaver Trail or on your way to Hozomeen in the summer than in the fall, which is about the last part of the year during which you can easily get anywhere in the park. In high season, this park can be like many others. Lake Chelan, Ross Lake, and Diablo Lake are relatively tourist-heavy spots. Nonetheless, Stehekin (the developed unit of the southern park section) also offers plenty of solitude, especially in the fall and winter. Washington Pass encompasses an area of jagged, snow-capped, glacier-laden.
If it's true isolation you seek, hike in the northern unit of the national park. And initially, it might not be bad snow, it could actually be pretty fluffy powdery stuff, initially, Mass said. The highest point along the North Cascade Highway (Washington State Route 20). With the extremes in altitude here, it's always good to bring some warm clothing, even in the summer months. However, this is a land of extremes: Trails at higher elevations are usually snow-covered into early July (though this varies considerably from year to year), and summer temperatures of 100☏ (38☌) are not unusual at Ross Lake and Lake Chelan. Closure depends on snow and avalanche conditions.įrom April to September, daytime temperatures range from 50° to 80☏ (10°-27☌), depending on the elevation. It lasts until mid- to late April and necessitates the regular closure of Wash. Few visit the North Cascades area in the winter, which begins creeping up in October in the upper elevations and mid-November in the lower elevations. Chinook and Cayuse Pass (on the West side of Mount Rainier National Park) close from late November through the end of May, but if the snow starts to fall a. The eastern side of the mountains is less wet than the western. At any time, though, expect rain and bring rain gear. As can usually be expected in the Northwest, rains arrive westerly from the Pacific in the spring and fall, with summer being the most pleasant all around.
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