Zones / 9a

Zone 9a

In the 2023 PRISM ZIP table, zone 9a is labeled with an average annual extreme minimum of 20°F to 25°F. 2,199 ZIP codes carry that half-zone. USDA’s map page describes these bands as 5°F half-zones inside 10°F zones.

Among cities on this site in this half-zone, the median last 32°F date at each city’s station runs from January 24 to April 2. That is a range across stations, not a zone-wide frost normal. USDA does not publish a single frost date per half-zone.

• San Antonio, TXZIP 78201 · 0.5 miles from the city point
• Austin, TXZIP 78703 · 0.8 miles from the city point
• Seattle, WAZIP 98121 · 0.3 miles from the city point
• Las Vegas, NVZIP 89129 · 1.5 miles from the city point
• North Las Vegas, NVZIP 89086 · 1.2 miles from the city point
• Baton Rouge, LAZIP 70806 · 0.8 miles from the city point
• Tallahassee, FLZIP 32301 · 1.8 miles from the city point
• Mobile, ALZIP 36606 · 0.1 miles from the city point
• Santa Rosa, CAZIP 95405 · 2.1 miles from the city point
• Charleston, SCZIP 29405 · 1.7 miles from the city point
• Bellevue, WAZIP 98005 · 1.2 miles from the city point
• Savannah, GAZIP 31405 · 1.8 miles from the city point
• Gainesville, FLZIP 32605 · 1.6 miles from the city point
• Round Rock, TXZIP 78664 · 1.7 miles from the city point
• College Station, TXZIP 77845 · 2.1 miles from the city point
• North Charleston, SCZIP 29404 · 1.6 miles from the city point
• Lafayette, LAZIP 70503 · 2.9 miles from the city point
• New Braunfels, TXZIP 78130 · 2.8 miles from the city point
• Conroe, TXZIP 77304 · 1.9 miles from the city point
• Gresham, ORZIP 97030 · 0.7 miles from the city point
• Renton, WAZIP 98057 · 1.3 miles from the city point
• Georgetown, TXZIP 78628 · 4.8 miles from the city point
• Beaverton, ORZIP 97005 · 1.1 miles from the city point
• Merced, CAZIP 95340 · 4.6 miles from the city point
• Mount Pleasant, SCZIP 29464 · 0.9 miles from the city point
• Kirkland, WAZIP 98034 · 1.4 miles from the city point
• Redding, CAZIP 96002 · 3.9 miles from the city point
• Bryan, TXZIP 77803 · 0.9 miles from the city point
• Leander, TXZIP 78641 · 3.3 miles from the city point
• Lake Charles, LAZIP 70601 · 1.9 miles from the city point
• Cedar Park, TXZIP 78613 · 0.2 miles from the city point
• Maricopa, AZZIP 85138 · 1.7 miles from the city point
• Gulfport, MSZIP 39507 · 2.4 miles from the city point
• San Marcos, TXZIP 78666 · 2.9 miles from the city point
• Dothan, ALZIP 36303 · 2.4 miles from the city point
• Ocala, FLZIP 34471 · 1.8 miles from the city point
• Casa Grande, AZZIP 85122 · 1.1 miles from the city point
• Pflugerville, TXZIP 78660 · 0.7 miles from the city point
• Albany, GAZIP 31701 · 1.3 miles from the city point
• Shoreline, WAZIP 98133 · 1.1 miles from the city point
• Kyle, TXZIP 78640 · 3.7 miles from the city point
• Hanford, CAZIP 93202 · 3 miles from the city point
• Tigard, ORZIP 97223 · 1.3 miles from the city point
• Lincoln, CAZIP 95648 · 3.5 miles from the city point
• Valdosta, GAZIP 31698 · 0.6 miles from the city point
• Fulshear, TXZIP 77441 · 1.4 miles from the city point
• Pensacola, FLZIP 32503 · 1.9 miles from the city point
• Burien, WAZIP 98166 · 1.7 miles from the city point
• Huntsville, TXZIP 77341 · 0.3 miles from the city point
• Oro Valley, AZZIP 85737 · 1.8 miles from the city point
• Los Banos, CAZIP 93635 · 3.7 miles from the city point
• Biloxi, MSZIP 39534 · 1.5 miles from the city point
• Rohnert Park, CAZIP 94928 · 0.4 miles from the city point
• Schertz, TXZIP 78154 · 1.3 miles from the city point
• Alexandria, LAZIP 71301 · 1.3 miles from the city point
• Edmonds, WAZIP 98020 · 1.3 miles from the city point
• Hutto, TXZIP 78634 · 1.3 miles from the city point
• Rosenberg, TXZIP 77471 · 2.4 miles from the city point
• Lynnwood, WAZIP 98037 · 1 miles from the city point

Source: PRISM 2023 PHZM ZIP CSV and USDA Plant Hardiness Zone Map.