Creal Springs, Illinois has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.9 °F (low) to 66.7 °F (high). Annual precipitation averages 50.2 Inches. Creal Springs 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.1 °F | 41.5 °F | 3.81 in. |
| February | 27.0 °F | 46.5 °F | 3.34 in. |
| March | 35.4 °F | 56.1 °F | 4.68 in. |
| April | 45.4 °F | 68.0 °F | 5.69 in. |
| May | 55.7 °F | 76.1 °F | 5.53 in. |
| June | 63.9 °F | 84.5 °F | 4.72 in. |
| July | 67.6 °F | 87.3 °F | 3.9 in. |
| August | 65.2 °F | 87.0 °F | 2.99 in. |
| September | 57.2 °F | 81.1 °F | 3.36 in. |
| October | 45.8 °F | 70.5 °F | 3.69 in. |
| November | 35.8 °F | 56.7 °F | 4.42 in. |
| December | 27.9 °F | 45.5 °F | 4.08 in. |
| Annual | 45.9 °F | 66.7 °F | 50.21 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |