Gates, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 5.3 °C (low) to 15.8 °C (high). Annual precipitation averages 1748 Millimeters. Gates is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.7 °C | 7.3 °C | 228.85 mm |
| February | 0.9 °C | 9.2 °C | 178.82 mm |
| March | 2.2 °C | 11.7 °C | 203.45 mm |
| April | 3.9 °C | 14.2 °C | 170.94 mm |
| May | 6.6 °C | 18.1 °C | 120.4 mm |
| June | 9.2 °C | 21 °C | 75.69 mm |
| July | 11.3 °C | 25.7 °C | 15.24 mm |
| August | 11.3 °C | 26.2 °C | 18.54 mm |
| September | 8.8 °C | 22.8 °C | 62.74 mm |
| October | 5.8 °C | 16.1 °C | 150.37 mm |
| November | 2.8 °C | 10.1 °C | 245.87 mm |
| December | 0.6 °C | 6.7 °C | 277.11 mm |
| Annual | 5.3 °C | 15.8 °C | 1748.02 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |