Concrete, Washington has a Temperate Oceanic Climate climate (Köppen classification: Cfb). Average annual temperatures range from 4.8 °C (low) to 14.3 °C (high). Annual precipitation averages 1851.9 Millimeters. Concrete 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 | -0.4 °C | 4.8 °C | 268.48 mm |
| February | -0.2 °C | 7.1 °C | 173.99 mm |
| March | 1.1 °C | 10.1 °C | 198.12 mm |
| April | 3.3 °C | 13.9 °C | 130.81 mm |
| May | 6.4 °C | 18.2 °C | 89.41 mm |
| June | 9.1 °C | 20.4 °C | 69.34 mm |
| July | 11.1 °C | 24.2 °C | 32.51 mm |
| August | 11.4 °C | 24.8 °C | 38.1 mm |
| September | 9 °C | 21.1 °C | 86.11 mm |
| October | 5.3 °C | 14.4 °C | 192.53 mm |
| November | 2.1 °C | 8.1 °C | 302.77 mm |
| December | -0.2 °C | 4.6 °C | 269.75 mm |
| Annual | 4.8 °C | 14.3 °C | 1851.92 mm |
| 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 : -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 | Cfb - Temperate Oceanic Climate |