Bandon, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 45.5 °F (low) to 59.8 °F (high). Annual precipitation averages 58.9 Inches. Bandon is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 40.5 °F | 53.9 °F | 9.06 in. |
| February | 40.3 °F | 54.6 °F | 7.21 in. |
| March | 41.0 °F | 55.2 °F | 7.37 in. |
| April | 42.9 °F | 57.1 °F | 5.54 in. |
| May | 46.4 °F | 60.5 °F | 2.93 in. |
| June | 49.9 °F | 63.4 °F | 1.58 in. |
| July | 52.5 °F | 66.0 °F | 0.34 in. |
| August | 52.2 °F | 66.8 °F | 0.46 in. |
| September | 49.9 °F | 66.5 °F | 1.38 in. |
| October | 46.8 °F | 62.9 °F | 4.05 in. |
| November | 43.2 °F | 57.2 °F | 8.19 in. |
| December | 40.4 °F | 53.6 °F | 10.8 in. |
| Annual | 45.5 °F | 59.8 °F | 58.91 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |