Nora, Illinois has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.2 °C (low) to 13.9 °C (high). Annual precipitation averages 967 Millimeters. Nora is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.5 °C | -2.7 °C | 34.54 mm |
| February | -9.6 °C | -0.2 °C | 39.62 mm |
| March | -3.7 °C | 6.7 °C | 53.34 mm |
| April | 2.4 °C | 14.4 °C | 97.54 mm |
| May | 9 °C | 20.8 °C | 108.46 mm |
| June | 14.6 °C | 25.9 °C | 143.51 mm |
| July | 16.4 °C | 27.6 °C | 115.06 mm |
| August | 15.2 °C | 26.7 °C | 103.63 mm |
| September | 10.7 °C | 23.2 °C | 92.2 mm |
| October | 4.3 °C | 16.2 °C | 74.42 mm |
| November | -1.8 °C | 7.6 °C | 59.94 mm |
| December | -7.9 °C | 0.4 °C | 44.7 mm |
| Annual | 3.2 °C | 13.9 °C | 966.96 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |