Moro, Oregon has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 3.6 °C (low) to 16.3 °C (high). Annual precipitation averages 286.3 Millimeters. Moro 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 | -3.1 °C | 4.7 °C | 37.85 mm |
| February | -2.2 °C | 7.2 °C | 27.94 mm |
| March | -0.1 °C | 11.6 °C | 25.91 mm |
| April | 2.1 °C | 15 °C | 23.88 mm |
| May | 5.8 °C | 19.8 °C | 24.64 mm |
| June | 8.8 °C | 23.7 °C | 15.75 mm |
| July | 12.3 °C | 29.3 °C | 4.57 mm |
| August | 12.1 °C | 29.2 °C | 5.08 mm |
| September | 8.2 °C | 24.8 °C | 10.41 mm |
| October | 3.4 °C | 16.9 °C | 27.18 mm |
| November | -0.6 °C | 9.1 °C | 39.62 mm |
| December | -3.4 °C | 4.1 °C | 43.43 mm |
| Annual | 3.6 °C | 16.3 °C | 286.26 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |