Warm Springs, Oregon has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 2.8 °C (low) to 18.3 °C (high). Annual precipitation averages 261.4 Millimeters. Warm Springs is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.2 °C | 6.4 °C | 37.34 mm |
| February | -2.7 °C | 9.1 °C | 28.19 mm |
| March | -1 °C | 13.2 °C | 19.3 mm |
| April | 1.2 °C | 16.9 °C | 22.35 mm |
| May | 4.9 °C | 21.9 °C | 25.15 mm |
| June | 8 °C | 26.1 °C | 18.54 mm |
| July | 11.1 °C | 32.1 °C | 8.38 mm |
| August | 10.5 °C | 31.7 °C | 7.37 mm |
| September | 7.1 °C | 26.8 °C | 6.6 mm |
| October | 2.4 °C | 18.7 °C | 17.78 mm |
| November | -1.1 °C | 10.6 °C | 29.46 mm |
| December | -3.6 °C | 5.6 °C | 40.89 mm |
| Annual | 2.8 °C | 18.3 °C | 261.35 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 | Dsb - Humid Continental Climate - Dry Cool Summer |