| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F | |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F | |
| Average First Frost Date: | Nov. 11 - Nov. 20 | |
| Average Last Frost Date: | Mar. 11 - Mar. 20 | |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 92342 - Helendale, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 31 | 35 | 39 | 43 | 51 | 58 | 63 | 63 | 57 | 47 | 36 | 30 | 46 |
| Avg Max Temp (°F) | 59 | 64 | 69 | 76 | 84 | 94 | 100 | 99 | 92 | 81 | 68 | 59 | 79 |
| Avg Precip (In.) | 1.06 | .98 | .99 | .25 | .18 | .07 | .14 | .24 | .27 | .18 | .29 | .62 | 5.26 |