Quiz: What is the average surface temperature of Lake Tahoe during January 14, 2025 by Lake Core Editors Desk What is the average surface temperature of Lake Tahoe during the summer months? Discover more about Lake Tahoe at our Lake Tahoe Category. A) 68°F (20°C) B) 75°F (24°C) C) 82°F (28°C) D) 60°F (16°C) Submit Answer See also Quiz: How many miles of shoreline does Lake Tahoe have?