Stafford, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 43.9 °F (low) to 62.8 °F (high). Annual precipitation averages 50.6 Inches. Stafford is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.5 °F | 46.9 °F | 7.11 in. |
| February | 35.9 °F | 50.6 °F | 5.13 in. |
| March | 38.2 °F | 55.4 °F | 5.99 in. |
| April | 41.3 °F | 60.6 °F | 4.43 in. |
| May | 46.3 °F | 67.5 °F | 3.31 in. |
| June | 50.5 °F | 72.6 °F | 2.04 in. |
| July | 54.4 °F | 80.8 °F | 0.44 in. |
| August | 54.7 °F | 81.6 °F | 0.5 in. |
| September | 51.1 °F | 75.7 °F | 1.7 in. |
| October | 44.9 °F | 63.4 °F | 4.59 in. |
| November | 39.3 °F | 52.3 °F | 7.11 in. |
| December | 35.1 °F | 46.0 °F | 8.23 in. |
| Annual | 43.9 °F | 62.8 °F | 50.58 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 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 |