Ludlow, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.1 °C (low) to 16.5 °C (high). Annual precipitation averages 984.5 Millimeters. Ludlow is located in USDA Plant Hardiness Zone 6a. 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 | -8.4 °C | 0.6 °C | 54.61 mm |
| February | -6.7 °C | 3.1 °C | 49.02 mm |
| March | -1.6 °C | 9.6 °C | 68.07 mm |
| April | 4.3 °C | 17.1 °C | 99.06 mm |
| May | 11 °C | 23.3 °C | 113.03 mm |
| June | 16.2 °C | 28.1 °C | 113.54 mm |
| July | 17.7 °C | 29.4 °C | 105.16 mm |
| August | 16.3 °C | 28.7 °C | 90.93 mm |
| September | 12.2 °C | 26.1 °C | 77.22 mm |
| October | 5.7 °C | 18.8 °C | 84.07 mm |
| November | -0.2 °C | 10.3 °C | 72.39 mm |
| December | -5.3 °C | 3.3 °C | 57.4 mm |
| Annual | 5.1 °C | 16.5 °C | 984.5 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 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 |