| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°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. 21 - Nov. 30 | |
| Average Last Frost Date: | Mar. 1 - Mar. 10 | |
| Koppen-Geiger Climate Zone: | BSh - Hot Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 92311 - Barstow, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 31 | 35 | 39 | 44 | 52 | 60 | 66 | 65 | 59 | 47 | 37 | 30 | 47 |
| Avg Max Temp (°F) | 60 | 66 | 71 | 78 | 87 | 97 | 103 | 101 | 95 | 83 | 69 | 60 | 81 |
| Avg Precip (In.) | .77 | .74 | .71 | .23 | .14 | .08 | .22 | .29 | .28 | .17 | .24 | .54 | 4.4 |