Hope, Idaho has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 1 °C (low) to 13.1 °C (high). Annual precipitation averages 723.2 Millimeters. Hope is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.6 °C | 0.7 °C | 89.66 mm |
| February | -5.4 °C | 3.3 °C | 54.61 mm |
| March | -3.1 °C | 7.9 °C | 66.04 mm |
| April | -0.3 °C | 12.8 °C | 47.5 mm |
| May | 3.6 °C | 18.4 °C | 65.79 mm |
| June | 6.9 °C | 21.6 °C | 66.8 mm |
| July | 9.1 °C | 27.3 °C | 21.34 mm |
| August | 8.7 °C | 27.4 °C | 17.02 mm |
| September | 4.9 °C | 21.4 °C | 36.58 mm |
| October | 0.9 °C | 12.6 °C | 69.6 mm |
| November | -2.4 °C | 4.4 °C | 83.31 mm |
| December | -5.5 °C | -0.1 °C | 104.9 mm |
| Annual | 1 °C | 13.1 °C | 723.15 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |