Madras, Oregon has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 2.1 °C (low) to 17.5 °C (high). Annual precipitation averages 267 Millimeters. Madras is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.4 °C | 6.3 °C | 33.02 mm |
| February | -3.1 °C | 8.5 °C | 25.15 mm |
| March | -1.6 °C | 12.6 °C | 20.83 mm |
| April | 0.3 °C | 15.8 °C | 25.65 mm |
| May | 4 °C | 20.9 °C | 29.72 mm |
| June | 6.9 °C | 24.9 °C | 19.3 mm |
| July | 10.1 °C | 30.9 °C | 9.14 mm |
| August | 9.6 °C | 30.7 °C | 8.13 mm |
| September | 6.2 °C | 25.9 °C | 8.64 mm |
| October | 1.7 °C | 17.9 °C | 19.81 mm |
| November | -1.6 °C | 10.2 °C | 29.21 mm |
| December | -4.1 °C | 5.5 °C | 38.35 mm |
| Annual | 2.1 °C | 17.5 °C | 266.95 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 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 | Extreme Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |