Jordan, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 31 °F (low) to 57.8 °F (high). Annual precipitation averages 12.7 Inches. Jordan is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.6 °F | 30.0 °F | 0.34 in. |
| February | 10.0 °F | 33.8 °F | 0.33 in. |
| March | 20.4 °F | 45.5 °F | 0.46 in. |
| April | 30.4 °F | 57.3 °F | 1.24 in. |
| May | 40.3 °F | 67.1 °F | 1.91 in. |
| June | 50.1 °F | 76.4 °F | 2.52 in. |
| July | 55.9 °F | 86.7 °F | 1.53 in. |
| August | 53.7 °F | 86.0 °F | 1.4 in. |
| September | 43.3 °F | 74.4 °F | 1.05 in. |
| October | 31.6 °F | 58.9 °F | 1.11 in. |
| November | 19.6 °F | 44.2 °F | 0.44 in. |
| December | 9.8 °F | 33.0 °F | 0.4 in. |
| Annual | 31 °F | 57.8 °F | 12.73 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |