Life on St. John USVI Land Crabs July 11, 2014 gerald Want to stay updated to Life on St. John - subscribe to my RSS feed. Thanks for visiting!Welcome back! More About Land Crabs St. John Weather Scattered showers, mainly before noon. Sunny, with a high near 80. East wind 18 to 21 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.