Lake Tahoe, straddling California and Nevada in the Sierra Nevada, typically sees its first snowflakes in late October or early November. However, significant, stick-on-the-ground accumulation usually arrives between mid-November and December.
Timing varies yearly with Pacific storm patterns, El Niño/La Niña cycles, and elevation (lake level: 6,225 ft; peaks exceed 10,000 ft). Higher resorts (Palisades Tahoe, Heavenly, Kirkwood) often open by Thanksgiving; lower areas may wait until December.
Peak snowpack occurs February–March. Spring skiing can last into May or June at high elevations. Check resort websites and NOAA forecasts for current conditions.