Entiat, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 41.8 °F (low) to 63.2 °F (high). Annual precipitation averages 12.6 Inches. Entiat is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.9 °F | 35.8 °F | 1.96 in. |
| February | 28.3 °F | 43.5 °F | 1.04 in. |
| March | 33.7 °F | 54.2 °F | 1.23 in. |
| April | 39.8 °F | 64.1 °F | 0.78 in. |
| May | 47.4 °F | 74.0 °F | 0.92 in. |
| June | 53.6 °F | 80.5 °F | 0.63 in. |
| July | 59.9 °F | 90.1 °F | 0.28 in. |
| August | 59.4 °F | 89.4 °F | 0.24 in. |
| September | 51.9 °F | 79.9 °F | 0.36 in. |
| October | 41.6 °F | 64.0 °F | 1.12 in. |
| November | 33.1 °F | 46.9 °F | 1.67 in. |
| December | 26.7 °F | 36.0 °F | 2.38 in. |
| Annual | 41.8 °F | 63.2 °F | 12.61 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |