CalPoly Weather

Weather and Climate at CalPoly

California Polytechnic State University - San Luis Obispo enjoys a Mediterranean climate with mild, wet winters and dry, warm summers.

• Temperature: Average highs range from 60°F (15°C) in winter to 75°F (24°C) in summer, with lows around 40°F (4°C) in winter and 55°F (13°C) in summer.
• Rainfall: Most precipitation occurs from November to March, averaging 25 inches (635 mm) annually.
• Extreme Weather: Rare, but occasional heavy rain can lead to flooding. Summer fog is common, known locally as 'June Gloom'.
• Impact on Campus Life: The mild climate allows for year-round outdoor activities and research. Commuting is generally comfortable, though cyclists should be prepared for occasional rain.