Ocean City, Washington has a Temperate Oceanic Climate climate (Köppen classification: Cfb). Average annual temperatures range from 6.9 °C (low) to 13.9 °C (high). Annual precipitation averages 2219.5 Millimeters. Ocean City is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.6 °C | 9 °C | 344.93 mm |
| February | 3.3 °C | 10 °C | 209.04 mm |
| March | 4.1 °C | 11.2 °C | 259.59 mm |
| April | 5.3 °C | 12.9 °C | 178.82 mm |
| May | 7.8 °C | 15.1 °C | 90.17 mm |
| June | 9.9 °C | 16.8 °C | 79.25 mm |
| July | 11.6 °C | 18.5 °C | 31.75 mm |
| August | 11.6 °C | 19.3 °C | 45.72 mm |
| September | 10.2 °C | 18.9 °C | 77.72 mm |
| October | 7.5 °C | 15.4 °C | 220.22 mm |
| November | 4.9 °C | 11.3 °C | 341.38 mm |
| December | 3.2 °C | 8.8 °C | 340.87 mm |
| Annual | 6.9 °C | 13.9 °C | 2219.46 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfb - Temperate Oceanic Climate |