Читать книгу Trinity Alps & Vicinity: Including Whiskeytown, Russian Wilderness, and Castle Crags Areas. A Hiking and Backpacking Guide онлайн

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Temperatures vary more greatly than along the coast or in the Sacramento Valley. Winter temperatures can be quite cold. Even Weaverville, at 2,000 feet, receives some snow almost every winter. The snowpack at the higher elevations can build up to 10–20 feet, making it an important storage facility of water for the Central Valley Project. High-country trails are usually free of snow by late June, but snow may linger all summer on north-facing slopes following winters of heavy snowfall.

Summer daytime temperatures can be quite hot, exceeding 90°F even at 5,000 or 6,000 feet. Down in the lower canyons, 100°F days are not uncommon. Day-to-night differentials can range up to as much as 45°F.

PLANTS

An amazing variety of plants grows within the Klamath Mountains. The varied geology, assisted by a relative lack of glaciation and volcanism, has produced one of the most distinct floral provinces in the world, which botanists refer to as the Klamath-Siskiyou Ecoregion. At the intersection of five major biotic regions—Coast Range, Cascade Range, Great Central Valley, Sierra Nevada, and Great Basin—the area boasts more than 130 endemic plant species and the highest concentration of different conifers in the world. The range harbors about 3,500 different plant species, including some unusual meat-eaters.