East Renton Highlands, Washington has a Temperate Oceanic Climate climate (Köppen classification: Cfb). Average annual temperatures range from 43.3 °F (low) to 60.2 °F (high). Annual precipitation averages 48.9 Inches. East Renton Highlands is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.1 °F | 46.1 °F | 6.5 in. |
| February | 35.1 °F | 48.7 °F | 4.97 in. |
| March | 37.2 °F | 52.7 °F | 5.43 in. |
| April | 40.5 °F | 58.5 °F | 4.29 in. |
| May | 46.1 °F | 65.7 °F | 2.74 in. |
| June | 50.2 °F | 69.8 °F | 2.23 in. |
| July | 54.0 °F | 76.5 °F | 0.95 in. |
| August | 54.4 °F | 77.1 °F | 1.36 in. |
| September | 50.4 °F | 71.2 °F | 2.19 in. |
| October | 44.0 °F | 60.2 °F | 5.3 in. |
| November | 38.4 °F | 50.7 °F | 6.51 in. |
| December | 34.5 °F | 45.1 °F | 6.45 in. |
| Annual | 43.3 °F | 60.2 °F | 48.92 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 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 | Cfb - Temperate Oceanic Climate |