Puyallup, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 6.5 °C (low) to 16.5 °C (high). Annual precipitation averages 1062.2 Millimeters. Puyallup 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.9 °C | 8.8 °C | 149.61 mm |
| February | 1.8 °C | 10.3 °C | 99.31 mm |
| March | 3.2 °C | 12.6 °C | 114.3 mm |
| April | 5.1 °C | 15.4 °C | 90.42 mm |
| May | 8.2 °C | 19.3 °C | 56.39 mm |
| June | 10.8 °C | 21.8 °C | 46.99 mm |
| July | 12.6 °C | 25.5 °C | 19.56 mm |
| August | 12.6 °C | 25.7 °C | 28.19 mm |
| September | 10.2 °C | 22.4 °C | 37.85 mm |
| October | 6.8 °C | 16.3 °C | 100.84 mm |
| November | 3.7 °C | 11.4 °C | 161.54 mm |
| December | 1.6 °C | 8.3 °C | 157.23 mm |
| Annual | 6.5 °C | 16.5 °C | 1062.23 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°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 |