Loraine, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.7 °F (low) to 62.6 °F (high). Annual precipitation averages 39.8 Inches. 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 | 17.5 °F | 34.3 °F | 1.78 in. |
| February | 21.0 °F | 39.0 °F | 1.95 in. |
| March | 30.8 °F | 51.0 °F | 2.54 in. |
| April | 41.8 °F | 63.5 °F | 4.03 in. |
| May | 53.2 °F | 73.5 °F | 5.23 in. |
| June | 62.9 °F | 82.7 °F | 4.86 in. |
| July | 66.3 °F | 86.5 °F | 4.06 in. |
| August | 64.1 °F | 84.8 °F | 3.84 in. |
| September | 55.6 °F | 78.6 °F | 3.57 in. |
| October | 44.1 °F | 66.0 °F | 3.25 in. |
| November | 32.7 °F | 51.6 °F | 2.65 in. |
| December | 22.9 °F | 39.1 °F | 2.01 in. |
| Annual | 42.7 °F | 62.6 °F | 39.77 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |