Nile, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 35.1 °F (low) to 58.6 °F (high). Annual precipitation averages 16.5 Inches. Nile is located in USDA Plant Hardiness Zone 6b. 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 | 22.0 °F | 35.9 °F | 2.75 in. |
| February | 23.8 °F | 42.1 °F | 1.84 in. |
| March | 27.6 °F | 49.2 °F | 1.48 in. |
| April | 33.1 °F | 57.4 °F | 1.1 in. |
| May | 40.2 °F | 66.7 °F | 1.0 in. |
| June | 46.3 °F | 73.3 °F | 0.71 in. |
| July | 51.5 °F | 83.0 °F | 0.37 in. |
| August | 50.8 °F | 82.7 °F | 0.3 in. |
| September | 43.3 °F | 74.2 °F | 0.45 in. |
| October | 34.4 °F | 59.6 °F | 1.53 in. |
| November | 26.9 °F | 44.4 °F | 1.98 in. |
| December | 21.6 °F | 35.0 °F | 2.99 in. |
| Annual | 35.1 °F | 58.6 °F | 16.5 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |