Beaver, Oklahoma has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 5.6 °C (low) to 21.9 °C (high). Annual precipitation averages 526 Millimeters. Beaver is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7 °C | 9.2 °C | 12.95 mm |
| February | -5.6 °C | 11.1 °C | 15.49 mm |
| March | -0.6 °C | 16.6 °C | 36.32 mm |
| April | 4.3 °C | 21.7 °C | 46.99 mm |
| May | 10.6 °C | 26.8 °C | 62.99 mm |
| June | 16.5 °C | 31.8 °C | 86.36 mm |
| July | 19.3 °C | 34.8 °C | 63.75 mm |
| August | 18.3 °C | 33.8 °C | 72.39 mm |
| September | 13.5 °C | 29.7 °C | 35.56 mm |
| October | 5.9 °C | 22.7 °C | 49.02 mm |
| November | -1.4 °C | 15.4 °C | 21.08 mm |
| December | -6.2 °C | 9.2 °C | 23.11 mm |
| Annual | 5.6 °C | 21.9 °C | 526.01 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |