Battle Ground, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 5.9 °C (low) to 16.7 °C (high). Annual precipitation averages 1322.6 Millimeters. Battle Ground 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 | 1.2 °C | 7.8 °C | 182.63 mm |
| February | 1.2 °C | 10.1 °C | 134.11 mm |
| March | 2.7 °C | 12.8 °C | 141.73 mm |
| April | 4.6 °C | 15.5 °C | 114.05 mm |
| May | 7.6 °C | 19.4 °C | 83.57 mm |
| June | 9.9 °C | 21.9 °C | 58.42 mm |
| July | 12.1 °C | 26.2 °C | 16 mm |
| August | 12 °C | 26.8 °C | 19.81 mm |
| September | 9.6 °C | 23.7 °C | 55.37 mm |
| October | 6.1 °C | 17.2 °C | 121.67 mm |
| November | 3.2 °C | 11.2 °C | 193.04 mm |
| December | 1.1 °C | 7.4 °C | 202.18 mm |
| Annual | 5.9 °C | 16.7 °C | 1322.58 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 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |