| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | 9c - Oak/Conifer Foothills |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 98635 - Lyle, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 27 | 30 | 34 | 38 | 44 | 50 | 54 | 54 | 47 | 39 | 33 | 28 | 40 |
| Avg Max Temp (°F) | 39 | 45 | 54 | 61 | 70 | 76 | 84 | 85 | 77 | 64 | 48 | 40 | 62 |
| Avg Precip (In.) | 4.94 | 3.76 | 2.46 | 1.41 | 1.03 | .79 | .31 | .43 | .97 | 1.93 | 4.23 | 5.31 | 27.56 |