Marsing, Idaho has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 4 °C (low) to 18.2 °C (high). Annual precipitation averages 235.2 Millimeters. 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 | -4.5 °C | 3.4 °C | 29.46 mm |
| February | -2.8 °C | 8 °C | 19.56 mm |
| March | 0.2 °C | 13.9 °C | 23.37 mm |
| April | 2.9 °C | 17.9 °C | 23.11 mm |
| May | 7.6 °C | 22.9 °C | 28.45 mm |
| June | 11.3 °C | 27.4 °C | 18.03 mm |
| July | 14.8 °C | 33.3 °C | 6.35 mm |
| August | 13.4 °C | 32.6 °C | 4.57 mm |
| September | 8.6 °C | 26.9 °C | 9.4 mm |
| October | 2.9 °C | 18.9 °C | 18.8 mm |
| November | -1.8 °C | 9.7 °C | 23.88 mm |
| December | -4.6 °C | 3.8 °C | 30.23 mm |
| Annual | 4 °C | 18.2 °C | 235.21 mm |
| 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 : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |