Freeland, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 5.8 °C (low) to 14.9 °C (high). Annual precipitation averages 772.2 Millimeters. Freeland 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.9 °C | 7.9 °C | 95.76 mm |
| February | 1.7 °C | 9.1 °C | 75.44 mm |
| March | 2.8 °C | 11.3 °C | 86.11 mm |
| April | 4.6 °C | 13.7 °C | 65.79 mm |
| May | 7.2 °C | 17.3 °C | 49.53 mm |
| June | 9.4 °C | 19.9 °C | 36.58 mm |
| July | 10.8 °C | 22.8 °C | 23.62 mm |
| August | 10.8 °C | 23.4 °C | 20.32 mm |
| September | 9.1 °C | 20.2 °C | 34.8 mm |
| October | 6.2 °C | 14.8 °C | 65.28 mm |
| November | 3.7 °C | 10.3 °C | 113.79 mm |
| December | 1.8 °C | 7.5 °C | 105.16 mm |
| Annual | 5.8 °C | 14.9 °C | 772.18 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 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 | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |