Weather information for the Port Townsend area is provided below. Average temperatures, climate details and current forecasts are included.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 45 | 48 | 52 | 56 | 62 | 67 | 71 | 72 | 67 | 58 | 50 | 46 |
| Avg. Low | 36 | 38 | 38 | 41 | 45 | 48 | 51 | 52 | 48 | 45 | 40 | 37 |
| Avg. Precip. | 2.4 | 1.6 | 1.9 | 1.7 | 1.6 | 1.3 | 0.9 | 0.9 | 1.3 | 1.5 | 2.7 | 3.3 |



