Woodway, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 44.5 °F (low) to 59.5 °F (high). Annual precipitation averages 36 Inches. Woodway is located in USDA Plant Hardiness Zone 9a. 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 | 36.7 °F | 47.0 °F | 4.98 in. |
| February | 36.7 °F | 49.5 °F | 3.4 in. |
| March | 38.8 °F | 53.5 °F | 3.85 in. |
| April | 41.9 °F | 57.7 °F | 2.79 in. |
| May | 46.8 °F | 64.1 °F | 1.82 in. |
| June | 50.9 °F | 68.3 °F | 1.66 in. |
| July | 54.2 °F | 73.9 °F | 0.84 in. |
| August | 54.4 °F | 74.4 °F | 0.96 in. |
| September | 51.2 °F | 69.0 °F | 1.55 in. |
| October | 45.6 °F | 59.6 °F | 3.47 in. |
| November | 40.2 °F | 51.3 °F | 5.45 in. |
| December | 36.5 °F | 46.1 °F | 5.24 in. |
| Annual | 44.5 °F | 59.5 °F | 36.01 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 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |