McMinnville, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 43.3 °F (low) to 63.5 °F (high). Annual precipitation averages 45.4 Inches. McMinnville is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.7 °F | 47.2 °F | 7.29 in. |
| February | 35.9 °F | 51.0 °F | 5.18 in. |
| March | 37.8 °F | 55.8 °F | 4.82 in. |
| April | 40.6 °F | 60.6 °F | 3.62 in. |
| May | 45.8 °F | 68.0 °F | 2.22 in. |
| June | 49.9 °F | 73.5 °F | 1.37 in. |
| July | 53.5 °F | 82.5 °F | 0.29 in. |
| August | 53.5 °F | 83.2 °F | 0.4 in. |
| September | 49.6 °F | 76.8 °F | 1.33 in. |
| October | 43.7 °F | 64.0 °F | 3.72 in. |
| November | 38.7 °F | 52.9 °F | 6.77 in. |
| December | 35.0 °F | 46.4 °F | 8.41 in. |
| Annual | 43.3 °F | 63.5 °F | 45.42 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |