Brady, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 5.8 °C (low) to 15.8 °C (high). Annual precipitation averages 1941.3 Millimeters. Brady is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.2 °C | 8.7 °C | 297.69 mm |
| February | 1.7 °C | 10.2 °C | 179.07 mm |
| March | 2.7 °C | 12.4 °C | 215.39 mm |
| April | 4.2 °C | 14.6 °C | 145.54 mm |
| May | 7 °C | 17.9 °C | 80.26 mm |
| June | 9.3 °C | 19.9 °C | 58.17 mm |
| July | 11.2 °C | 23 °C | 21.59 mm |
| August | 11.1 °C | 25.6 °C | 35.56 mm |
| September | 9.2 °C | 21.8 °C | 78.99 mm |
| October | 6 °C | 16.1 °C | 199.64 mm |
| November | 3.3 °C | 11.2 °C | 325.63 mm |
| December | 1.7 °C | 8.1 °C | 303.78 mm |
| Annual | 5.8 °C | 15.8 °C | 1941.31 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |