Fobes Hill, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 6.2 °C (low) to 15.2 °C (high). Annual precipitation averages 1068.6 Millimeters. Fobes Hill 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 | 1.6 °C | 8 °C | 130.56 mm |
| February | 1.6 °C | 9.6 °C | 95 mm |
| March | 2.9 °C | 11.8 °C | 114.55 mm |
| April | 4.9 °C | 14.3 °C | 90.42 mm |
| May | 7.8 °C | 17.9 °C | 69.6 mm |
| June | 10.2 °C | 20.1 °C | 63.25 mm |
| July | 12 °C | 23.3 °C | 26.16 mm |
| August | 12.1 °C | 23.8 °C | 26.67 mm |
| September | 9.9 °C | 20.9 °C | 53.34 mm |
| October | 6.4 °C | 15.2 °C | 102.36 mm |
| November | 3.4 °C | 10.4 °C | 155.7 mm |
| December | 1.4 °C | 7.5 °C | 140.97 mm |
| Annual | 6.2 °C | 15.2 °C | 1068.58 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 | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |