Davenport, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 34.8 °F (low) to 57.5 °F (high). Annual precipitation averages 14.2 Inches. Davenport is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.9 °F | 33.0 °F | 1.68 in. |
| February | 23.4 °F | 38.6 °F | 1.02 in. |
| March | 28.3 °F | 48.1 °F | 1.53 in. |
| April | 32.6 °F | 56.7 °F | 1.12 in. |
| May | 40.1 °F | 66.3 °F | 1.4 in. |
| June | 45.2 °F | 72.9 °F | 1.22 in. |
| July | 50.7 °F | 83.6 °F | 0.43 in. |
| August | 50.2 °F | 83.4 °F | 0.32 in. |
| September | 42.6 °F | 73.7 °F | 0.5 in. |
| October | 33.6 °F | 58.2 °F | 1.25 in. |
| November | 26.9 °F | 42.4 °F | 1.73 in. |
| December | 21.5 °F | 32.7 °F | 1.99 in. |
| Annual | 34.8 °F | 57.5 °F | 14.19 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |