| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F 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 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 1 - Apr. 10 | |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean 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 98266 - Maple Falls, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 29 | 32 | 34 | 38 | 43 | 48 | 51 | 51 | 47 | 40 | 34 | 31 | 40 |
| Avg Max Temp (°F) | 39 | 45 | 50 | 57 | 63 | 68 | 74 | 75 | 69 | 57 | 46 | 40 | 57 |
| Avg Precip (In.) | 8.46 | 6.53 | 5.97 | 4.73 | 4 | 3.45 | 2.45 | 2.01 | 3.26 | 6.45 | 9.29 | 9.44 | 66.04 |