Cambridge, Idaho has a Humid Continental Climate - Dry Warm Summer climate (Köppen classification: Dsa). Average annual temperatures range from 36 °F (low) to 62.9 °F (high). Annual precipitation averages 21.3 Inches. Cambridge is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.5 °F | 33.8 °F | 3.29 in. |
| February | 22.4 °F | 41.2 °F | 2.28 in. |
| March | 29.4 °F | 53.0 °F | 2.29 in. |
| April | 34.8 °F | 62.1 °F | 1.55 in. |
| May | 42.5 °F | 72.2 °F | 1.84 in. |
| June | 49.0 °F | 80.6 °F | 1.3 in. |
| July | 56.4 °F | 92.8 °F | 0.37 in. |
| August | 53.9 °F | 92.0 °F | 0.32 in. |
| September | 44.5 °F | 80.9 °F | 0.59 in. |
| October | 34.2 °F | 64.3 °F | 1.27 in. |
| November | 26.1 °F | 46.6 °F | 2.35 in. |
| December | 19.7 °F | 35.0 °F | 3.86 in. |
| Annual | 36 °F | 62.9 °F | 21.31 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dsa - Humid Continental Climate - Dry Warm Summer |