Equality, Illinois has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8 °C (low) to 19.4 °C (high). Annual precipitation averages 1205 Millimeters. Equality is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.9 °C | 5.3 °C | 93.47 mm |
| February | -2.4 °C | 8.1 °C | 82.04 mm |
| March | 2.1 °C | 13.4 °C | 113.28 mm |
| April | 7.6 °C | 19.9 °C | 125.98 mm |
| May | 13.4 °C | 24.8 °C | 130.81 mm |
| June | 18.2 °C | 29.4 °C | 113.54 mm |
| July | 19.9 °C | 31.1 °C | 103.12 mm |
| August | 18.7 °C | 30.6 °C | 75.69 mm |
| September | 14.5 °C | 27.7 °C | 80.01 mm |
| October | 8 °C | 21.2 °C | 86.11 mm |
| November | 2.2 °C | 13.7 °C | 102.87 mm |
| December | -2 °C | 7.6 °C | 98.04 mm |
| Annual | 8 °C | 19.4 °C | 1204.96 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |