Port Orford, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 8.3 °C (low) to 15.3 °C (high). Annual precipitation averages 1774.7 Millimeters. Port Orford is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.8 °C | 12.2 °C | 282.19 mm |
| February | 5.6 °C | 12.4 °C | 210.57 mm |
| March | 5.8 °C | 12.6 °C | 229.36 mm |
| April | 6.8 °C | 13.2 °C | 168.4 mm |
| May | 8.6 °C | 15.3 °C | 83.82 mm |
| June | 10.2 °C | 17.1 °C | 49.02 mm |
| July | 11.5 °C | 18.9 °C | 11.68 mm |
| August | 11.6 °C | 19.6 °C | 14.73 mm |
| September | 10.9 °C | 19.2 °C | 38.1 mm |
| October | 9.2 °C | 16.7 °C | 120.9 mm |
| November | 7.3 °C | 13.8 °C | 249.94 mm |
| December | 5.8 °C | 12.1 °C | 315.98 mm |
| Annual | 8.3 °C | 15.3 °C | 1774.69 mm |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |