Beaver, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 43.8 °F (low) to 59.4 °F (high). Annual precipitation averages 86.8 Inches. 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 | 38.9 °F | 50.4 °F | 12.59 in. |
| February | 38.4 °F | 52.5 °F | 9.84 in. |
| March | 39.1 °F | 54.1 °F | 9.72 in. |
| April | 40.8 °F | 56.8 °F | 7.21 in. |
| May | 44.8 °F | 61.3 °F | 4.51 in. |
| June | 48.5 °F | 64.9 °F | 3.18 in. |
| July | 50.9 °F | 69.1 °F | 0.83 in. |
| August | 51.0 °F | 70.5 °F | 1.21 in. |
| September | 48.6 °F | 68.6 °F | 3.06 in. |
| October | 44.9 °F | 61.4 °F | 7.54 in. |
| November | 41.1 °F | 54.6 °F | 12.98 in. |
| December | 38.3 °F | 49.1 °F | 14.14 in. |
| Annual | 43.8 °F | 59.4 °F | 86.81 in. |
| 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 : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |