Galesburg, Kansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.1 °F (low) to 67.4 °F (high). Annual precipitation averages 44.2 Inches. Galesburg 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 | 22.4 °F | 42.8 °F | 1.54 in. |
| February | 26.0 °F | 47.7 °F | 1.73 in. |
| March | 35.1 °F | 57.7 °F | 2.86 in. |
| April | 45.0 °F | 67.1 °F | 4.55 in. |
| May | 55.9 °F | 75.5 °F | 6.69 in. |
| June | 65.3 °F | 84.8 °F | 5.86 in. |
| July | 69.5 °F | 89.7 °F | 4.46 in. |
| August | 67.3 °F | 89.2 °F | 3.79 in. |
| September | 58.8 °F | 81.2 °F | 4.4 in. |
| October | 46.7 °F | 69.9 °F | 3.71 in. |
| November | 35.4 °F | 56.9 °F | 2.63 in. |
| December | 26.3 °F | 46.0 °F | 1.99 in. |
| Annual | 46.1 °F | 67.4 °F | 44.21 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 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 |