| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°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 98512 - Olympia, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 33 | 35 | 37 | 43 | 47 | 50 | 50 | 46 | 40 | 36 | 33 | 40 |
| Avg Max Temp (°F) | 44 | 49 | 53 | 59 | 65 | 70 | 76 | 77 | 72 | 60 | 50 | 44 | 60 |
| Avg Precip (In.) | 7.75 | 6.39 | 5.45 | 3.67 | 2.33 | 1.82 | .85 | 1.13 | 2.08 | 4.31 | 8.33 | 8.18 | 52.28 |