Rockcreek, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 44.1 °F (low) to 63.3 °F (high). Annual precipitation averages 40.4 Inches. 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 | 35.7 °F | 47.2 °F | 6.01 in. |
| February | 35.9 °F | 51.0 °F | 4.31 in. |
| March | 38.3 °F | 55.9 °F | 4.25 in. |
| April | 41.4 °F | 61.4 °F | 3.09 in. |
| May | 47.0 °F | 68.5 °F | 2.28 in. |
| June | 51.2 °F | 73.4 °F | 1.57 in. |
| July | 55.2 °F | 81.2 °F | 0.38 in. |
| August | 55.1 °F | 82.0 °F | 0.5 in. |
| September | 50.8 °F | 76.1 °F | 1.39 in. |
| October | 44.4 °F | 64.0 °F | 3.42 in. |
| November | 39.2 °F | 52.7 °F | 5.98 in. |
| December | 35.3 °F | 46.3 °F | 7.19 in. |
| Annual | 44.1 °F | 63.3 °F | 40.37 in. |
| 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 : 15°F to 20°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 |