Ponderay, Idaho has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 35 °F (low) to 56.6 °F (high). Annual precipitation averages 32.7 Inches. Ponderay 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.2 °F | 34.0 °F | 4.44 in. |
| February | 23.5 °F | 38.4 °F | 2.82 in. |
| March | 27.9 °F | 46.6 °F | 3.49 in. |
| April | 33.3 °F | 55.7 °F | 2.38 in. |
| May | 40.4 °F | 65.9 °F | 2.39 in. |
| June | 45.9 °F | 71.7 °F | 2.45 in. |
| July | 50.0 °F | 81.8 °F | 1.15 in. |
| August | 48.8 °F | 82.0 °F | 0.87 in. |
| September | 41.6 °F | 71.5 °F | 1.31 in. |
| October | 34.1 °F | 56.0 °F | 2.75 in. |
| November | 28.5 °F | 41.8 °F | 4.12 in. |
| December | 23.0 °F | 33.6 °F | 4.54 in. |
| Annual | 35 °F | 56.6 °F | 32.71 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |