Pacific, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 44.2 °F (low) to 61.1 °F (high). Annual precipitation averages 43.9 Inches. Pacific is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.8 °F | 47.7 °F | 6.45 in. |
| February | 35.7 °F | 50.3 °F | 3.9 in. |
| March | 38.1 °F | 54.4 °F | 4.57 in. |
| April | 41.6 °F | 59.5 °F | 3.35 in. |
| May | 47.0 °F | 66.2 °F | 2.23 in. |
| June | 51.8 °F | 70.4 °F | 1.98 in. |
| July | 55.1 °F | 76.5 °F | 0.81 in. |
| August | 55.2 °F | 76.9 °F | 1.28 in. |
| September | 50.9 °F | 71.2 °F | 1.76 in. |
| October | 44.7 °F | 60.7 °F | 4.41 in. |
| November | 39.1 °F | 52.3 °F | 6.62 in. |
| December | 35.3 °F | 46.8 °F | 6.54 in. |
| Annual | 44.2 °F | 61.1 °F | 43.9 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |