Umapine, Oregon has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 5.4 °C (low) to 18.3 °C (high). Annual precipitation averages 347.5 Millimeters. Umapine is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.7 °C | 5.6 °C | 41.15 mm |
| February | -0.8 °C | 8.7 °C | 33.27 mm |
| March | 1.7 °C | 13.8 °C | 34.8 mm |
| April | 4.4 °C | 17.9 °C | 30.99 mm |
| May | 8.1 °C | 22.7 °C | 35.56 mm |
| June | 11.4 °C | 26.6 °C | 25.65 mm |
| July | 14.4 °C | 32.2 °C | 10.16 mm |
| August | 13.8 °C | 31.9 °C | 8.13 mm |
| September | 9.6 °C | 26.6 °C | 12.19 mm |
| October | 4.6 °C | 18.5 °C | 30.23 mm |
| November | 0.8 °C | 10.2 °C | 42.93 mm |
| December | -1.8 °C | 5.3 °C | 42.42 mm |
| Annual | 5.4 °C | 18.3 °C | 347.48 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |