| 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 8a: 10F to 15F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate | |
| Ecoregion: | 2g - Southern Puget Prairies | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98568 - Oakville, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 34 | 36 | 39 | 44 | 48 | 52 | 52 | 47 | 42 | 37 | 34 | 42 |
| Avg Max Temp (°F) | 45 | 49 | 54 | 60 | 66 | 71 | 76 | 77 | 72 | 61 | 50 | 45 | 61 |
| Avg Precip (In.) | 8.21 | 6.97 | 5.88 | 3.94 | 2.64 | 2.04 | .86 | 1.14 | 2.36 | 4.5 | 8.99 | 8.85 | 56.38 |