| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F Zone 8b: 15°F to 20°F Zone 4b: -25°F to -20°F Zone 8a: 10°F to 15°F Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Cfb - Oceanic Climate | |
| Ecoregion: | 77a - North Cascades Lowland Forests | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98237 - Concrete, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 30 | 32 | 34 | 38 | 44 | 49 | 52 | 53 | 48 | 42 | 36 | 31 | 41 |
| Avg Max Temp (°F) | 41 | 46 | 51 | 58 | 65 | 69 | 75 | 76 | 70 | 59 | 47 | 41 | 58 |
| Avg Precip (In.) | 8.8 | 6.7 | 6.05 | 4.38 | 3.46 | 2.75 | 1.71 | 1.6 | 2.88 | 5.59 | 10.03 | 9.78 | 63.75 |