Brookings, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 8.2 °C (low) to 16 °C (high). Annual precipitation averages 1932.4 Millimeters. Brookings is located in USDA Plant Hardiness Zone 10a. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Jan. 11 - Jan. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.9 °C | 12.3 °C | 308.36 mm |
| February | 5.9 °C | 13.1 °C | 245.36 mm |
| March | 6 °C | 13.8 °C | 249.17 mm |
| April | 6.8 °C | 14.8 °C | 182.37 mm |
| May | 8.5 °C | 17 °C | 85.34 mm |
| June | 9.9 °C | 18.7 °C | 53.09 mm |
| July | 11.2 °C | 19.6 °C | 9.4 mm |
| August | 11.5 °C | 19.3 °C | 14.48 mm |
| September | 10.6 °C | 19.7 °C | 35.05 mm |
| October | 9.2 °C | 17.9 °C | 130.3 mm |
| November | 7.4 °C | 14.1 °C | 265.94 mm |
| December | 5.8 °C | 12.2 °C | 353.57 mm |
| Annual | 8.2 °C | 16 °C | 1932.43 mm |
| Average First Frost Date | Jan. 11 - Jan. 20 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |