Klickitat, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 41.8 °F (low) to 63.7 °F (high). Annual precipitation averages 14.2 Inches. Klickitat 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 | 30.3 °F | 42.0 °F | 2.02 in. |
| February | 31.2 °F | 47.8 °F | 1.6 in. |
| March | 35.0 °F | 55.1 °F | 1.36 in. |
| April | 39.6 °F | 62.1 °F | 0.74 in. |
| May | 45.8 °F | 71.0 °F | 0.88 in. |
| June | 51.0 °F | 77.0 °F | 0.5 in. |
| July | 56.6 °F | 86.2 °F | 0.14 in. |
| August | 56.3 °F | 86.5 °F | 0.32 in. |
| September | 49.2 °F | 79.1 °F | 0.36 in. |
| October | 41.0 °F | 65.0 °F | 1.12 in. |
| November | 34.7 °F | 50.5 °F | 2.07 in. |
| December | 30.4 °F | 41.6 °F | 3.08 in. |
| Annual | 41.8 °F | 63.7 °F | 14.19 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |