| 2023 Hardiness Zone: | Zone 10b: 35°F to 40°F | |
| 2012 Hardiness Zone: | Zone 10b: 35°F to 40°F Zone 10a: 30°F to 35°F | |
| 1990 Hardiness Zone: | Zone 10b: 35F to 40F | |
| Average First Frost Date: | No Frost | |
| Average Last Frost Date: | Frost Rare | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 91950 - National City, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 47 | 48 | 50 | 53 | 57 | 61 | 64 | 65 | 64 | 58 | 50 | 46 | 55 |
| Avg Max Temp (°F) | 67 | 68 | 69 | 70 | 71 | 73 | 77 | 79 | 79 | 76 | 72 | 68 | 72 |
| Avg Precip (In.) | 2.23 | 2.13 | 2.17 | .72 | .2 | .09 | .03 | .08 | .24 | .39 | 1.12 | 1.28 | 10.67 |