| 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 Zone 8a: 10°F to 15°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | 78c - Umpqua Interior Foothills |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 97457 - Myrtle Creek, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 34 | 35 | 37 | 39 | 44 | 49 | 53 | 52 | 48 | 42 | 38 | 34 | 42 |
| Avg Max Temp (°F) | 48 | 53 | 57 | 62 | 68 | 75 | 83 | 83 | 78 | 67 | 54 | 47 | 65 |
| Avg Precip (In.) | 5.3 | 4.52 | 3.9 | 3 | 2.03 | 1.1 | .48 | .65 | 1.23 | 2.38 | 5.77 | 5.64 | 36.01 |