Galena, Kansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47 °F (low) to 68.5 °F (high). Annual precipitation averages 46.5 Inches. Galena is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.4 °F | 44.3 °F | 1.98 in. |
| February | 27.8 °F | 49.4 °F | 2.07 in. |
| March | 36.5 °F | 59.0 °F | 3.43 in. |
| April | 45.9 °F | 68.4 °F | 5.01 in. |
| May | 56.2 °F | 76.4 °F | 6.91 in. |
| June | 65.3 °F | 85.3 °F | 5.24 in. |
| July | 69.4 °F | 90.0 °F | 3.99 in. |
| August | 67.4 °F | 89.8 °F | 3.61 in. |
| September | 59.2 °F | 82.1 °F | 4.53 in. |
| October | 47.2 °F | 70.9 °F | 3.88 in. |
| November | 36.5 °F | 58.4 °F | 3.3 in. |
| December | 27.8 °F | 47.6 °F | 2.53 in. |
| Annual | 47 °F | 68.5 °F | 46.48 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |