Carey, Idaho has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 30.5 °F (low) to 58.3 °F (high). Annual precipitation averages 12.1 Inches. Carey is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.6 °F | 31.7 °F | 1.65 in. |
| February | 14.8 °F | 36.3 °F | 1.0 in. |
| March | 22.9 °F | 46.5 °F | 1.21 in. |
| April | 29.4 °F | 56.7 °F | 1.09 in. |
| May | 37.4 °F | 66.3 °F | 1.37 in. |
| June | 43.5 °F | 75.8 °F | 0.87 in. |
| July | 50.7 °F | 87.1 °F | 0.27 in. |
| August | 49.2 °F | 86.1 °F | 0.32 in. |
| September | 41.2 °F | 75.8 °F | 0.55 in. |
| October | 30.8 °F | 60.9 °F | 1.01 in. |
| November | 21.4 °F | 44.5 °F | 0.98 in. |
| December | 13.1 °F | 32.1 °F | 1.81 in. |
| Annual | 30.5 °F | 58.3 °F | 12.13 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |