| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate |
| Ecoregion: | 10e - Pleistocene Lake Basins |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 98932 - Granger, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 28 | 34 | 39 | 46 | 52 | 57 | 56 | 48 | 37 | 31 | 25 | 40 |
| Avg Max Temp (°F) | 40 | 48 | 58 | 66 | 75 | 82 | 89 | 89 | 80 | 67 | 50 | 40 | 65 |
| Avg Precip (In.) | 1 | .64 | .63 | .52 | .57 | .46 | .2 | .31 | .42 | .54 | .99 | 1.18 | 7.45 |