Rockcreek, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 6.7 °C (low) to 17.4 °C (high). Annual precipitation averages 1025.4 Millimeters. Rockcreek is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.1 °C | 8.4 °C | 152.65 mm |
| February | 2.2 °C | 10.6 °C | 109.47 mm |
| March | 3.5 °C | 13.3 °C | 107.95 mm |
| April | 5.2 °C | 16.3 °C | 78.49 mm |
| May | 8.3 °C | 20.3 °C | 57.91 mm |
| June | 10.7 °C | 23 °C | 39.88 mm |
| July | 12.9 °C | 27.3 °C | 9.65 mm |
| August | 12.8 °C | 27.8 °C | 12.7 mm |
| September | 10.4 °C | 24.5 °C | 35.31 mm |
| October | 6.9 °C | 17.8 °C | 86.87 mm |
| November | 4 °C | 11.5 °C | 151.89 mm |
| December | 1.8 °C | 7.9 °C | 182.63 mm |
| Annual | 6.7 °C | 17.4 °C | 1025.4 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 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 | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |