Paderborn, Illinois has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.8 °F (low) to 66.7 °F (high). Annual precipitation averages 44.1 Inches. Paderborn 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 | 23.4 °F | 40.5 °F | 2.75 in. |
| February | 26.9 °F | 45.8 °F | 2.47 in. |
| March | 35.5 °F | 55.8 °F | 3.59 in. |
| April | 46.0 °F | 67.7 °F | 4.98 in. |
| May | 56.7 °F | 76.7 °F | 5.08 in. |
| June | 65.5 °F | 85.6 °F | 4.71 in. |
| July | 69.4 °F | 88.9 °F | 4.1 in. |
| August | 67.2 °F | 87.6 °F | 3.36 in. |
| September | 59.1 °F | 81.1 °F | 3.28 in. |
| October | 47.6 °F | 69.7 °F | 3.15 in. |
| November | 36.5 °F | 55.7 °F | 3.72 in. |
| December | 27.8 °F | 44.7 °F | 2.95 in. |
| Annual | 46.8 °F | 66.7 °F | 44.14 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 |