Beaver, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 6.6 °C (low) to 15.3 °C (high). Annual precipitation averages 2205 Millimeters. Beaver is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.8 °C | 10.2 °C | 319.79 mm |
| February | 3.6 °C | 11.4 °C | 249.94 mm |
| March | 3.9 °C | 12.3 °C | 246.89 mm |
| April | 4.9 °C | 13.8 °C | 183.13 mm |
| May | 7.1 °C | 16.3 °C | 114.55 mm |
| June | 9.2 °C | 18.3 °C | 80.77 mm |
| July | 10.5 °C | 20.6 °C | 21.08 mm |
| August | 10.6 °C | 21.4 °C | 30.73 mm |
| September | 9.2 °C | 20.3 °C | 77.72 mm |
| October | 7.2 °C | 16.3 °C | 191.52 mm |
| November | 5.1 °C | 12.6 °C | 329.69 mm |
| December | 3.5 °C | 9.5 °C | 359.16 mm |
| Annual | 6.6 °C | 15.3 °C | 2204.97 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |