Spray, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 38.3 °F (low) to 67.5 °F (high). Annual precipitation averages 14.1 Inches. Spray 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.0 °F | 45.0 °F | 1.38 in. |
| February | 28.3 °F | 50.4 °F | 1.23 in. |
| March | 31.5 °F | 57.5 °F | 1.53 in. |
| April | 35.8 °F | 65.2 °F | 1.6 in. |
| May | 42.5 °F | 74.2 °F | 1.41 in. |
| June | 48.1 °F | 82.0 °F | 1.3 in. |
| July | 54.1 °F | 93.4 °F | 0.35 in. |
| August | 52.8 °F | 93.0 °F | 0.33 in. |
| September | 45.7 °F | 83.7 °F | 0.39 in. |
| October | 36.9 °F | 68.8 °F | 1.18 in. |
| November | 31.1 °F | 53.2 °F | 1.55 in. |
| December | 26.1 °F | 44.1 °F | 1.82 in. |
| Annual | 38.3 °F | 67.5 °F | 14.07 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |