Cambridge, Idaho has a Humid Continental Climate - Dry Warm Summer climate (Köppen classification: Dsa). Average annual temperatures range from 2.2 °C (low) to 17.2 °C (high). Annual precipitation averages 541.3 Millimeters. 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 | -7.5 °C | 1 °C | 83.57 mm |
| February | -5.3 °C | 5.1 °C | 57.91 mm |
| March | -1.4 °C | 11.7 °C | 58.17 mm |
| April | 1.6 °C | 16.7 °C | 39.37 mm |
| May | 5.8 °C | 22.3 °C | 46.74 mm |
| June | 9.4 °C | 27 °C | 33.02 mm |
| July | 13.6 °C | 33.8 °C | 9.4 mm |
| August | 12.2 °C | 33.3 °C | 8.13 mm |
| September | 6.9 °C | 27.2 °C | 14.99 mm |
| October | 1.2 °C | 17.9 °C | 32.26 mm |
| November | -3.3 °C | 8.1 °C | 59.69 mm |
| December | -6.8 °C | 1.7 °C | 98.04 mm |
| Annual | 2.2 °C | 17.2 °C | 541.29 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dsa - Humid Continental Climate - Dry Warm Summer |