Stafford, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 6.6 °C (low) to 17.1 °C (high). Annual precipitation averages 1284.7 Millimeters. 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 | 1.9 °C | 8.3 °C | 180.59 mm |
| February | 2.2 °C | 10.3 °C | 130.3 mm |
| March | 3.4 °C | 13 °C | 152.15 mm |
| April | 5.2 °C | 15.9 °C | 112.52 mm |
| May | 7.9 °C | 19.7 °C | 84.07 mm |
| June | 10.3 °C | 22.6 °C | 51.82 mm |
| July | 12.4 °C | 27.1 °C | 11.18 mm |
| August | 12.6 °C | 27.6 °C | 12.7 mm |
| September | 10.6 °C | 24.3 °C | 43.18 mm |
| October | 7.2 °C | 17.4 °C | 116.59 mm |
| November | 4.1 °C | 11.3 °C | 180.59 mm |
| December | 1.7 °C | 7.8 °C | 209.04 mm |
| Annual | 6.6 °C | 17.1 °C | 1284.73 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |