Marsing, Idaho has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 39.2 °F (low) to 64.8 °F (high). Annual precipitation averages 9.3 Inches. Marsing is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.9 °F | 38.2 °F | 1.16 in. |
| February | 26.9 °F | 46.4 °F | 0.77 in. |
| March | 32.3 °F | 57.1 °F | 0.92 in. |
| April | 37.3 °F | 64.3 °F | 0.91 in. |
| May | 45.7 °F | 73.3 °F | 1.12 in. |
| June | 52.3 °F | 81.4 °F | 0.71 in. |
| July | 58.7 °F | 91.9 °F | 0.25 in. |
| August | 56.2 °F | 90.6 °F | 0.18 in. |
| September | 47.5 °F | 80.5 °F | 0.37 in. |
| October | 37.2 °F | 66.0 °F | 0.74 in. |
| November | 28.8 °F | 49.5 °F | 0.94 in. |
| December | 23.7 °F | 38.8 °F | 1.19 in. |
| Annual | 39.2 °F | 64.8 °F | 9.26 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |