Drummond, Idaho has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 28.3 °F (low) to 54 °F (high). Annual precipitation averages 20.2 Inches. Drummond is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.1 °F | 28.7 °F | 2.16 in. |
| February | 12.7 °F | 32.8 °F | 1.57 in. |
| March | 20.4 °F | 42.3 °F | 1.62 in. |
| April | 27.7 °F | 52.2 °F | 1.92 in. |
| May | 35.8 °F | 62.7 °F | 2.37 in. |
| June | 41.9 °F | 71.2 °F | 1.84 in. |
| July | 47.2 °F | 81.4 °F | 0.79 in. |
| August | 45.2 °F | 80.9 °F | 0.92 in. |
| September | 38.2 °F | 71.0 °F | 1.36 in. |
| October | 29.2 °F | 55.8 °F | 1.75 in. |
| November | 19.6 °F | 40.1 °F | 1.64 in. |
| December | 11.4 °F | 29.1 °F | 2.23 in. |
| Annual | 28.3 °F | 54 °F | 20.17 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |