Butte Falls, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 3.5 °C (low) to 17.9 °C (high). Annual precipitation averages 918.7 Millimeters. Butte Falls is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.5 °C | 8.2 °C | 124.97 mm |
| February | -1.1 °C | 10.3 °C | 101.85 mm |
| March | 0.1 °C | 12.5 °C | 96.77 mm |
| April | 1.7 °C | 15.1 °C | 83.31 mm |
| May | 4.8 °C | 19.9 °C | 66.29 mm |
| June | 7.3 °C | 24.2 °C | 38.35 mm |
| July | 10.7 °C | 30.1 °C | 15.24 mm |
| August | 10.1 °C | 30.2 °C | 11.68 mm |
| September | 7.1 °C | 26.7 °C | 19.05 mm |
| October | 3.2 °C | 19 °C | 70.61 mm |
| November | 0.6 °C | 11.3 °C | 129.29 mm |
| December | -1.6 °C | 7.3 °C | 161.29 mm |
| Annual | 3.5 °C | 17.9 °C | 918.7 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |