Newdale, Idaho has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.3 °C (low) to 13 °C (high). Annual precipitation averages 360.4 Millimeters. Newdale 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 | -11.9 °C | -2.1 °C | 34.04 mm |
| February | -10.1 °C | 0.4 °C | 21.59 mm |
| March | -5.3 °C | 6.8 °C | 26.16 mm |
| April | -1.4 °C | 12.8 °C | 33.53 mm |
| May | 2.9 °C | 18.1 °C | 50.04 mm |
| June | 6.4 °C | 22.8 °C | 39.88 mm |
| July | 9.3 °C | 28.4 °C | 14.99 mm |
| August | 8.3 °C | 28.3 °C | 18.54 mm |
| September | 4.2 °C | 22.6 °C | 27.69 mm |
| October | -1 °C | 14.3 °C | 34.04 mm |
| November | -6.2 °C | 5.3 °C | 26.67 mm |
| December | -10.9 °C | -1.3 °C | 33.27 mm |
| Annual | -1.3 °C | 13 °C | 360.44 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| 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 | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |