Ekalaka, Montana has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.4 °F (low) to 57.1 °F (high). Annual precipitation averages 18.2 Inches. Ekalaka is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.0 °F | 31.6 °F | 0.59 in. |
| February | 12.6 °F | 34.1 °F | 0.69 in. |
| March | 21.4 °F | 44.8 °F | 0.95 in. |
| April | 30.5 °F | 55.7 °F | 1.86 in. |
| May | 40.2 °F | 65.5 °F | 3.28 in. |
| June | 49.8 °F | 75.5 °F | 2.93 in. |
| July | 56.9 °F | 84.6 °F | 2.16 in. |
| August | 55.4 °F | 84.0 °F | 1.35 in. |
| September | 45.4 °F | 73.9 °F | 1.57 in. |
| October | 32.9 °F | 57.9 °F | 1.51 in. |
| November | 21.3 °F | 43.4 °F | 0.79 in. |
| December | 12.5 °F | 33.7 °F | 0.53 in. |
| Annual | 32.4 °F | 57.1 °F | 18.21 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |