| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 6b: -5°F to 0°F Zone 4b: -25°F to -20°F Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Sep. 21 - Sep. 30 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | Dsb - Humid Continental Climate - Dry Cool Summer |
| Ecoregion: | 15u - Inland Maritime Foothills and Valleys |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 99156 - Newport, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 23 | 26 | 32 | 39 | 45 | 48 | 47 | 40 | 33 | 28 | 21 | 33 |
| Avg Max Temp (°F) | 32 | 39 | 49 | 59 | 69 | 75 | 83 | 83 | 73 | 58 | 40 | 33 | 58 |
| Avg Precip (In.) | 2.92 | 2.47 | 2.21 | 1.9 | 2.3 | 1.94 | 1.35 | 1.15 | 1.18 | 1.64 | 3.45 | 3.98 | 26.5 |