| 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 |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F |
| Average First Frost Date: | November 11 - 20 |
| Average Last Frost Date: | March 21 - 31 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | 2f - Central Puget Lowland |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98342 - Indianola, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 34 | 36 | 38 | 41 | 46 | 51 | 54 | 54 | 50 | 44 | 39 | 35 | 43 |
| Avg Max Temp (°F) | 46 | 50 | 54 | 59 | 65 | 70 | 75 | 75 | 70 | 60 | 51 | 46 | 60 |
| Avg Precip (In.) | 5.48 | 4.75 | 4.1 | 2.68 | 2.01 | 1.63 | .95 | 1.08 | 1.69 | 3.35 | 5.97 | 6.09 | 39.78 |