Niarada, Montana has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.8 °F (low) to 57.4 °F (high). Annual precipitation averages 13.9 Inches. Niarada is located in USDA Plant Hardiness Zone 6a. 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 | 19.7 °F | 33.8 °F | 1.17 in. |
| February | 20.6 °F | 37.8 °F | 0.85 in. |
| March | 26.1 °F | 47.2 °F | 0.94 in. |
| April | 32.2 °F | 56.6 °F | 1.18 in. |
| May | 39.5 °F | 66.6 °F | 1.45 in. |
| June | 45.9 °F | 73.1 °F | 2.12 in. |
| July | 50.7 °F | 84.1 °F | 0.86 in. |
| August | 49.2 °F | 83.8 °F | 0.64 in. |
| September | 41.9 °F | 73.0 °F | 1.01 in. |
| October | 33.1 °F | 57.3 °F | 1.23 in. |
| November | 26.1 °F | 42.0 °F | 1.31 in. |
| December | 20.4 °F | 33.5 °F | 1.14 in. |
| Annual | 33.8 °F | 57.4 °F | 13.9 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |