| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F | |
| 2012 Hardiness Zone: | Zone 10a: 30°F to 35°F | |
| 1990 Hardiness Zone: | Zone 10b: 35F to 40F | |
| Average First Frost Date: | Jan. 21 - Jan. 31 | |
| Average Last Frost Date: | Jan. 21 - Jan. 31 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 92054 - Oceanside, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 45 | 46 | 48 | 51 | 56 | 59 | 63 | 63 | 61 | 56 | 49 | 45 | 54 |
| Avg Max Temp (°F) | 65 | 65 | 66 | 67 | 68 | 71 | 75 | 76 | 76 | 73 | 69 | 66 | 70 |
| Avg Precip (In.) | 2.52 | 2.32 | 2.25 | .9 | .24 | .1 | .02 | .12 | .29 | .43 | 1.01 | 1.41 | 11.63 |