Horseshoe Bend, Idaho has a Humid Continental Climate - Dry Warm Summer climate (Köppen classification: Dsa). Average annual temperatures range from 38.4 °F (low) to 64.5 °F (high). Annual precipitation averages 15.5 Inches. Horseshoe Bend is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.5 °F | 38.7 °F | 2.1 in. |
| February | 26.4 °F | 46.1 °F | 1.41 in. |
| March | 31.9 °F | 54.9 °F | 1.84 in. |
| April | 36.2 °F | 62.7 °F | 1.58 in. |
| May | 43.7 °F | 72.2 °F | 1.76 in. |
| June | 50.0 °F | 81.1 °F | 0.93 in. |
| July | 56.6 °F | 92.3 °F | 0.38 in. |
| August | 55.0 °F | 90.8 °F | 0.21 in. |
| September | 47.2 °F | 80.4 °F | 0.49 in. |
| October | 37.2 °F | 65.9 °F | 1.03 in. |
| November | 29.1 °F | 49.5 °F | 1.52 in. |
| December | 23.8 °F | 39.2 °F | 2.26 in. |
| Annual | 38.4 °F | 64.5 °F | 15.51 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dsa - Humid Continental Climate - Dry Warm Summer |