Mount Hood, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 38 °F (low) to 59.9 °F (high). Annual precipitation averages 34.9 Inches. Mount Hood 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 Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.9 °F | 40.3 °F | 5.75 in. |
| February | 29.2 °F | 44.9 °F | 3.86 in. |
| March | 31.8 °F | 51.5 °F | 3.61 in. |
| April | 35.9 °F | 58.1 °F | 2.42 in. |
| May | 41.3 °F | 66.4 °F | 1.68 in. |
| June | 46.1 °F | 72.3 °F | 1.03 in. |
| July | 50.6 °F | 81.5 °F | 0.24 in. |
| August | 50.5 °F | 81.3 °F | 0.32 in. |
| September | 44.7 °F | 74.5 °F | 0.81 in. |
| October | 37.7 °F | 60.9 °F | 3.13 in. |
| November | 32.0 °F | 47.4 °F | 5.42 in. |
| December | 27.9 °F | 39.5 °F | 6.61 in. |
| Annual | 38 °F | 59.9 °F | 34.88 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |