| 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 |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| 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 98502 - Olympia, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 34 | 36 | 38 | 44 | 48 | 51 | 51 | 47 | 41 | 37 | 33 | 41 |
| Avg Max Temp (°F) | 45 | 49 | 54 | 59 | 65 | 71 | 76 | 77 | 72 | 60 | 50 | 45 | 60 |
| Avg Precip (In.) | 7.9 | 6.73 | 5.7 | 3.79 | 2.33 | 1.79 | .9 | 1.18 | 2.07 | 4.41 | 8.53 | 8.53 | 53.86 |