| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| 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 98516 - Olympia, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 34 | 36 | 38 | 43 | 48 | 51 | 51 | 47 | 41 | 37 | 33 | 41 |
| Avg Max Temp (°F) | 45 | 49 | 54 | 59 | 65 | 70 | 76 | 77 | 71 | 60 | 50 | 45 | 60 |
| Avg Precip (In.) | 7.19 | 5.9 | 5.08 | 3.43 | 2.31 | 1.75 | .92 | 1.18 | 2.01 | 3.97 | 7.7 | 7.72 | 49.16 |