Wendell, Idaho has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 37.4 °F (low) to 63.8 °F (high). Annual precipitation averages 9.8 Inches. Wendell is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.4 °F | 37.8 °F | 1.32 in. |
| February | 24.2 °F | 43.8 °F | 0.76 in. |
| March | 30.3 °F | 54.3 °F | 0.99 in. |
| April | 35.3 °F | 61.8 °F | 0.92 in. |
| May | 43.1 °F | 71.5 °F | 1.08 in. |
| June | 50.3 °F | 81.0 °F | 0.65 in. |
| July | 57.2 °F | 92.0 °F | 0.15 in. |
| August | 55.0 °F | 90.4 °F | 0.25 in. |
| September | 46.4 °F | 80.1 °F | 0.39 in. |
| October | 36.5 °F | 65.6 °F | 0.79 in. |
| November | 27.5 °F | 49.5 °F | 0.97 in. |
| December | 21.5 °F | 37.8 °F | 1.57 in. |
| Annual | 37.4 °F | 63.8 °F | 9.84 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |