Loraine, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6 °C (low) to 17 °C (high). Annual precipitation averages 1010.2 Millimeters. Loraine is located in USDA Plant Hardiness Zone 6a. 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 | -8.1 °C | 1.3 °C | 45.21 mm |
| February | -6.1 °C | 3.9 °C | 49.53 mm |
| March | -0.7 °C | 10.6 °C | 64.52 mm |
| April | 5.4 °C | 17.5 °C | 102.36 mm |
| May | 11.8 °C | 23.1 °C | 132.84 mm |
| June | 17.2 °C | 28.2 °C | 123.44 mm |
| July | 19.1 °C | 30.3 °C | 103.12 mm |
| August | 17.8 °C | 29.3 °C | 97.54 mm |
| September | 13.1 °C | 25.9 °C | 90.68 mm |
| October | 6.7 °C | 18.9 °C | 82.55 mm |
| November | 0.4 °C | 10.9 °C | 67.31 mm |
| December | -5.1 °C | 3.9 °C | 51.05 mm |
| Annual | 6 °C | 17 °C | 1010.15 mm |
| 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |