Beautiful, Spacious, and often Daunting, The Sierras in the Tahoe Area contain some of the best summer climbing in California. The area is almost covered in climbable rock, and route setters will delight at the bounty of untouched rock.
Consisting mostly of Granite, with a few Baslitic Exceptions, you will find climbs off all type, like the long tradional or sport routes at Lover's Leap, to the pumpy tall bouldering found EVERYWHERE, but most notably Donner and Pack Saddle Passes.
Climbing is year round in some places, though most areas are covered in snow from the first snow (usually in October or November) until March - June depending on altitude and direction of the rock.
Places to stay are plentyful, from blm camping, organized campgrounds, cheap hotels, to even four star hotels in Reno or South Lake.
From the Bay Area, head up Highway 80 to Sacramento, where you will either head up into the hills either on 80, 50, or 89, depending on where you're going.
From Reno, head up Highway 80 to go to North Lake destinations, or down highway 395 , and then West on highway 89 into South Lake Tahoe.
Mountain Project's determination of some of the classic, most popular, highest rated routes for Tahoe Vicinity:
With regard to the weather link at the top of the page (or any of the Tahoe Vicinity pages): I would ALWAYS use noaa.gov vs wunderground.com when researching the Tahoe area forecasts. Much more accurate!!