| 2023 Hardiness Zone: | Zone 10a: 30°F to 35°F | |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F | |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F | |
| Average First Frost Date: | Dec. 11 - Dec. 20 | |
| Average Last Frost Date: | Feb. 11 - Feb. 20 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 92316 - Bloomington, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 42 | 44 | 45 | 47 | 52 | 56 | 61 | 62 | 59 | 53 | 46 | 42 | 51 |
| Avg Max Temp (°F) | 66 | 68 | 70 | 75 | 79 | 88 | 94 | 95 | 90 | 82 | 73 | 67 | 79 |
| Avg Precip (In.) | 3.52 | 3.46 | 3.37 | .77 | .29 | .07 | .01 | .15 | .32 | .39 | 1.23 | 1.86 | 15.45 |