The weather in South Lake Tahoe can vary greatly throughout the year because the lake is in an alpine setting. Lake Tahoe weather ranges from the high 90s in the middle of the summer to temperatures below freezing during winter months. The Lake Tahoe area gets an average of 250 to 300 days of sunshine each year with low humidity.
The water temperature in Lake Tahoe ranges from 32°F Fahrenheit in winter to 68°F in the summer. It is suggested that you dress in layers throughout the year and always have a jacket readily available.