| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate |
| Ecoregion: | 78a - Rogue/Illinois Valleys |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 97530 - Jacksonville, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 30 | 32 | 34 | 37 | 42 | 47 | 52 | 51 | 46 | 39 | 34 | 30 | 40 |
| Avg Max Temp (°F) | 47 | 52 | 57 | 63 | 71 | 79 | 87 | 87 | 81 | 69 | 52 | 45 | 66 |
| Avg Precip (In.) | 3.14 | 2.57 | 2.38 | 1.64 | 1.4 | .77 | .41 | .54 | .86 | 1.68 | 3.38 | 3.49 | 22.26 |