East Moline, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.9 °C (low) to 15.5 °C (high). Annual precipitation averages 967 Millimeters. East Moline is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.9 °C | -0.9 °C | 39.12 mm |
| February | -7.9 °C | 1.6 °C | 44.45 mm |
| March | -2 °C | 8.7 °C | 64.26 mm |
| April | 4.2 °C | 16.1 °C | 92.96 mm |
| May | 10.8 °C | 22.3 °C | 123.19 mm |
| June | 16.3 °C | 27.4 °C | 122.94 mm |
| July | 18.3 °C | 29.1 °C | 108.71 mm |
| August | 17.2 °C | 28.1 °C | 101.09 mm |
| September | 12.6 °C | 24.8 °C | 88.14 mm |
| October | 6.1 °C | 17.6 °C | 73.15 mm |
| November | -0.7 °C | 9.3 °C | 57.66 mm |
| December | -6.4 °C | 2.1 °C | 51.31 mm |
| Annual | 4.9 °C | 15.5 °C | 966.98 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |