Ronald, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 35.6 °F (low) to 55.1 °F (high). Annual precipitation averages 41.1 Inches. Ronald is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.1 °F | 34.8 °F | 6.71 in. |
| February | 24.1 °F | 39.4 °F | 4.8 in. |
| March | 27.6 °F | 45.8 °F | 3.5 in. |
| April | 32.5 °F | 52.9 °F | 2.17 in. |
| May | 39.6 °F | 61.9 °F | 1.69 in. |
| June | 46.0 °F | 67.6 °F | 1.06 in. |
| July | 51.6 °F | 77.1 °F | 0.61 in. |
| August | 50.8 °F | 78.3 °F | 0.43 in. |
| September | 43.4 °F | 70.5 °F | 1.3 in. |
| October | 35.2 °F | 56.2 °F | 4.34 in. |
| November | 28.4 °F | 42.0 °F | 6.49 in. |
| December | 23.5 °F | 34.1 °F | 8.0 in. |
| Annual | 35.6 °F | 55.1 °F | 41.1 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |