San Jose, CA planting zone & frost dates
San Jose is in USDA hardiness zone 9b. Frost is rare here: in most years temperatures do not drop to 32°F.
Useful for zone 9b gardens
- Drip irrigation kit — saves water in long, hot seasons
- Shade cloth — protects plants from midday sun
- Soil moisture meter
- Plants for zone 9
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Hardiness zone by ZIP code in San Jose
- 95101 zone 10a
- 95103 zone 9b
- 95106 zone 9b
- 95108 zone 9b
- 95109 zone 9b
- 95110 zone 10a
- 95111 zone 9b
- 95112 zone 9b
- 95113 zone 9b
- 95115 zone 9b
- 95116 zone 9b
- 95117 zone 9b
- 95118 zone 9b
- 95119 zone 9b
- 95120 zone 9b
- 95121 zone 9b
- 95122 zone 9b
- 95123 zone 9b
- 95124 zone 9b
- 95125 zone 9b
- 95126 zone 9b
- 95127 zone 9b
- 95128 zone 9b
- 95129 zone 9b
- 95130 zone 9b
- 95131 zone 10a
- 95132 zone 9b
- 95133 zone 9b
- 95134 zone 10a
- 95135 zone 9b
- 95136 zone 9b
- 95138 zone 9b
- 95139 zone 9b
- 95148 zone 9b
- 95150 zone 9b
- 95151 zone 9b
- 95152 zone 9b
- 95153 zone 9b
- 95154 zone 9b
- 95155 zone 9b
- 95156 zone 9b
- 95157 zone 9b
- 95158 zone 9b
- 95159 zone 9b
- 95160 zone 9b
- 95161 zone 10a
- 95164 zone 9b
- 95170 zone 9b
- 95172 zone 9b
- 95173 zone 9b
- 95190 zone 10a
- 95191 zone 9b
- 95193 zone 9b
- 95194 zone 10a
- 95196 zone 9b
Nearby cities
- Santa Clara zone 9b, last frost Jan 12
- Campbell zone 9b, last frost Feb 2
- Milpitas zone 10a, last frost Jan 12
- Los Gatos zone 9b, last frost Feb 2
- Cupertino zone 9b, last frost Jan 6
- Sunnyvale zone 10a, last frost Jan 6
- Saratoga zone 9b, last frost Feb 2
- Mountain View zone 10a, last frost Jan 6
Questions
What growing zone is San Jose, CA?
San Jose is in USDA Plant Hardiness Zone 9b (average extreme winter low 25°F to 30°F), according to the USDA 2023 map. Some ZIP codes of the city fall in zone 10a.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station San Jose, CA (USC00047821), 1.4 km (0.9 mi) from the city center, elevation 20 m, based on 17 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.