Elk City, Idaho has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2.3 °C (low) to 13.7 °C (high). Annual precipitation averages 768.1 Millimeters. Elk City 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 Aug. 21 - Aug. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.6 °C | 1.8 °C | 81.03 mm |
| February | -8.7 °C | 4.7 °C | 56.39 mm |
| March | -5.8 °C | 8.5 °C | 74.17 mm |
| April | -2.8 °C | 11.7 °C | 74.93 mm |
| May | 0.9 °C | 17.2 °C | 79.25 mm |
| June | 4.2 °C | 21.3 °C | 83.82 mm |
| July | 6.1 °C | 27.8 °C | 33.02 mm |
| August | 4.6 °C | 28.2 °C | 27.69 mm |
| September | 1 °C | 22.7 °C | 37.08 mm |
| October | -2.4 °C | 14.1 °C | 62.48 mm |
| November | -5.9 °C | 5.6 °C | 87.12 mm |
| December | -9.7 °C | 0.8 °C | 71.12 mm |
| Annual | -2.3 °C | 13.7 °C | 768.1 mm |
| Average First Frost Date | Aug. 21 - Aug. 31 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |