The Sierra Nevada experiences an alpine climate at higher elevations, characterized by cold temperatures and significant snowfall.

While the lower elevations of the Sierra Nevada can have Mediterranean climate characteristics (dry summers and wet winters), the higher elevations experience an alpine climate. This is characterized by:

Cold temperatures: Even in summer, temperatures can drop significantly, especially at night.
Significant snowfall: Heavy snowfall accumulates during winter, creating a deep snowpack that persists for much of the year.
Short growing seasons: Due to the cold temperatures, the growing season is relatively short, limiting plant growth.

The alpine climate significantly influences the ecology of the higher elevations of the Sierra Nevada, shaping the vegetation and animal life found in these regions.