Kenmore, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 7.2 °C (low) to 16.1 °C (high). Annual precipitation averages 992.4 Millimeters. Kenmore is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.5 °C | 8.6 °C | 138.94 mm |
| February | 2.6 °C | 10.1 °C | 93.22 mm |
| March | 3.9 °C | 12.2 °C | 102.87 mm |
| April | 5.8 °C | 15.1 °C | 77.72 mm |
| May | 8.7 °C | 18.8 °C | 53.85 mm |
| June | 11.1 °C | 21.2 °C | 44.45 mm |
| July | 12.9 °C | 24.7 °C | 22.35 mm |
| August | 13.1 °C | 25.1 °C | 29.72 mm |
| September | 11.1 °C | 21.9 °C | 42.93 mm |
| October | 7.7 °C | 16 °C | 94.49 mm |
| November | 4.6 °C | 11.1 °C | 146.05 mm |
| December | 2.4 °C | 8.1 °C | 145.8 mm |
| Annual | 7.2 °C | 16.1 °C | 992.39 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 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 | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |