CSUS Weather

Weather and Climate at CSUS

The Crystal Springs Upland School experiences a Mediterranean climate, characterized by mild, wet winters and hot, dry summers. The average temperature ranges from 50°F (10°C) in winter to 85°F (29°C) in summer.

• Winter: Temperatures can drop to around 40°F (4°C) at night, with occasional rainfall.
• Summer: Daytime temperatures often exceed 90°F (32°C), with very little precipitation.
• Extreme Weather: While rare, heatwaves can occur in summer, and the region is occasionally affected by wildfires.
• Impact on Campus Life: The mild climate allows for year-round outdoor activities, though summer heat may affect commuting and outdoor research.