what zone is austin tx for gardening
ZIP code 78746, Austin TX is in USDA Hardiness Zone 8b: 15F to 20F. Using updated climate data through 2010, 78746 is in the Plantmaps Hardiness Zone 8b: 15F to 20F. The average first frost in 78746 is between December 1 - 10, while the average last frost occurs between February 21 - 28. 78746 is part of Ecoregion 30c - Balcones Canyonlands. 78746 averages 121 - 150 days per year where the temperatue exceeds 86Â°F. The average annual high temperature in 78746 is 79Â°F and the average annual low temperature is 57Â°F. The average high temperature in July (Summer) is 96Â°F, while the average high temperature in January (Winter) is 60Â°F.