In Truckee, California average summer temperatures range from 40 degrees (low) to 79 degrees (high). Many move to the area because of the phenomenal winter recreational, but stay for the summers.
Occasionally, summer skies give way to Sierra thundershowers, but these don't last long. Always bring a light sweater, sweatshirt and/or jacket for the cool, summer evenings. Also, know that weather can change rapidly from lake-level (6,225 ft) to the mountain peaks (10,880 ft). Lake Tahoe area has experienced snowfall in every month of the year, although it is rare in July and August.
Average winter temperatures range from 17 degrees (low) to 42 degrees (high). Average total snowfall is 201 inches and total precipitation averages 30 inches. Many higher elevation ski resorts, including Northstar California, expect an average of 350+ inches of snow annually and snow can remain late in the season.
About 2 million years ago, a shift in tectonic plates caused the Tahoe Basin to drop down between the Sierra Crest to the west and the Carson Range to the east. Volcanic activity, also caused by the tectonic shifts, led to expulsion of magma up through the faults, filling in gaps and damming the valley.
Ten thousand years ago, at the time of the last ice age, individual glaciers formed at the area's highest elevations, on the north, west and south ends of the Lake. Movement by the glaciers scoured out basins and formed Donner Lake, Emerald Bay on Lake Tahoe and Fallen Leaf Lake, which sits up and to the west of Lake Tahoe.
Today, erosion and weathering are causeing a slow, undetectable lowering of the Sierra, the mountain range that houses Tahoe. It is believed that Lake Tahoe is filling in with sediment at a rate of one foot every 3,200 years, so that in 3,158,000 years the Lake will be replaced by a meadow.
Lake Tahoe is the largest freshwater alpine lake in North America, set in the Sierra Nevada Mountains and located along the border of California and Nevada.
The Lake Tahoe Basin has a total population of 65,000 and approximately 3 million visitors each year. Lake Tahoe remains the same awe-inspiring place that drew the Washoe Indians here thousands of years ago. Tourism booms as the area's main source of income, while visitors and locals alike bask in the unlimited recreational options available and the area's unfettered beauty.
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