Ashford, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 37.9 °F (low) to 56.3 °F (high). Annual precipitation averages 73.7 Inches. Ashford is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.1 °F | 41.3 °F | 11.45 in. |
| February | 29.9 °F | 44.2 °F | 7.14 in. |
| March | 31.9 °F | 48.8 °F | 8.48 in. |
| April | 34.8 °F | 54.5 °F | 5.87 in. |
| May | 40.4 °F | 62.2 °F | 4.3 in. |
| June | 44.7 °F | 67.4 °F | 3.35 in. |
| July | 49.0 °F | 74.0 °F | 1.14 in. |
| August | 49.2 °F | 74.5 °F | 1.51 in. |
| September | 44.4 °F | 67.7 °F | 2.67 in. |
| October | 38.2 °F | 55.5 °F | 7.01 in. |
| November | 32.9 °F | 45.9 °F | 10.81 in. |
| December | 29.5 °F | 40.0 °F | 9.95 in. |
| Annual | 37.9 °F | 56.3 °F | 73.68 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |