Drummond, Idaho has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2.1 °C (low) to 12.2 °C (high). Annual precipitation averages 512.3 Millimeters. 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 | -12.2 °C | -1.8 °C | 54.86 mm |
| February | -10.7 °C | 0.4 °C | 39.88 mm |
| March | -6.4 °C | 5.7 °C | 41.15 mm |
| April | -2.4 °C | 11.2 °C | 48.77 mm |
| May | 2.1 °C | 17.1 °C | 60.2 mm |
| June | 5.5 °C | 21.8 °C | 46.74 mm |
| July | 8.4 °C | 27.4 °C | 20.07 mm |
| August | 7.3 °C | 27.2 °C | 23.37 mm |
| September | 3.4 °C | 21.7 °C | 34.54 mm |
| October | -1.6 °C | 13.2 °C | 44.45 mm |
| November | -6.9 °C | 4.5 °C | 41.66 mm |
| December | -11.4 °C | -1.6 °C | 56.64 mm |
| Annual | -2.1 °C | 12.2 °C | 512.33 mm |
| 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 : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |