Sunriver, Oregon has a Continental Subarctic - Cold Dry Summer climate (Köppen classification: Dsc). Average annual temperatures range from 31 °F (low) to 59.2 °F (high). Annual precipitation averages 18.1 Inches. Sunriver is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.5 °F | 40.4 °F | 2.67 in. |
| February | 22.2 °F | 43.3 °F | 1.84 in. |
| March | 25.1 °F | 48.8 °F | 1.41 in. |
| April | 28.2 °F | 55.3 °F | 1.29 in. |
| May | 34.3 °F | 64.0 °F | 1.42 in. |
| June | 38.8 °F | 71.9 °F | 0.91 in. |
| July | 44.4 °F | 83.0 °F | 0.52 in. |
| August | 43.5 °F | 82.6 °F | 0.54 in. |
| September | 37.3 °F | 75.0 °F | 0.57 in. |
| October | 30.6 °F | 61.1 °F | 1.45 in. |
| November | 25.7 °F | 46.3 °F | 2.29 in. |
| December | 20.8 °F | 38.4 °F | 3.15 in. |
| Annual | 31 °F | 59.2 °F | 18.06 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dsc - Continental Subarctic - Cold Dry Summer |