Pulaski, Illinois has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.7 °F (low) to 68 °F (high). Annual precipitation averages 49.9 Inches. Pulaski is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.3 °F | 43.0 °F | 3.76 in. |
| February | 29.4 °F | 48.3 °F | 3.66 in. |
| March | 37.3 °F | 57.8 °F | 4.74 in. |
| April | 47.1 °F | 68.8 °F | 5.43 in. |
| May | 57.4 °F | 77.6 °F | 5.22 in. |
| June | 65.8 °F | 85.9 °F | 4.41 in. |
| July | 69.3 °F | 88.8 °F | 3.78 in. |
| August | 66.8 °F | 87.6 °F | 2.93 in. |
| September | 58.8 °F | 81.9 °F | 3.41 in. |
| October | 47.2 °F | 71.4 °F | 3.91 in. |
| November | 36.9 °F | 57.6 °F | 4.46 in. |
| December | 29.9 °F | 46.7 °F | 4.17 in. |
| Annual | 47.7 °F | 68 °F | 49.88 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |