North Riverside, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6 °C (low) to 15.4 °C (high). Annual precipitation averages 1005.1 Millimeters. North Riverside is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.8 °C | -0.1 °C | 55.12 mm |
| February | -6.2 °C | 1.9 °C | 52.83 mm |
| March | -1.2 °C | 8 °C | 59.94 mm |
| April | 4.6 °C | 15 °C | 100.84 mm |
| May | 10.7 °C | 21.2 °C | 120.4 mm |
| June | 16.3 °C | 26.8 °C | 110.74 mm |
| July | 19.2 °C | 29.3 °C | 106.68 mm |
| August | 18.4 °C | 28.2 °C | 104.9 mm |
| September | 14.1 °C | 24.6 °C | 82.8 mm |
| October | 7.2 °C | 17.3 °C | 87.38 mm |
| November | 0.9 °C | 9.5 °C | 64.52 mm |
| December | -4.7 °C | 2.9 °C | 58.93 mm |
| Annual | 6 °C | 15.4 °C | 1005.08 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |