How Much Does a Lemon Weigh?

One lemon produces approximately 1.334 ounces of juice and 3 teaspoons of lemon zest. Some popular, commercially grown lemon varieties include "Bearss," "Eureka" and "Lisbon." Several factors affect the size and weight of lemons, including soil conditions, tree spacing and the use of fertilizers, pesticides and fungicides. Citrus producers, such as Sunkist Growers Inc., ship lemons based on size, including small, medium and large, in cartons or in 2-, 3- or 5-pound bags.