Camden, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.9 °C (low) to 17 °C (high). Annual precipitation averages 1000.3 Millimeters. Camden 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 | -8.1 °C | 1.3 °C | 49.02 mm |
| February | -6 °C | 4.1 °C | 49.53 mm |
| March | -0.6 °C | 10.6 °C | 64.77 mm |
| April | 5.4 °C | 17.6 °C | 101.35 mm |
| May | 11.7 °C | 23.2 °C | 128.52 mm |
| June | 17 °C | 28.1 °C | 121.92 mm |
| July | 18.8 °C | 30.1 °C | 99.82 mm |
| August | 17.6 °C | 29.2 °C | 94.49 mm |
| September | 12.8 °C | 25.9 °C | 89.41 mm |
| October | 6.5 °C | 19 °C | 80.01 mm |
| November | 0.4 °C | 11.1 °C | 68.83 mm |
| December | -4.9 °C | 4.1 °C | 52.58 mm |
| Annual | 5.9 °C | 17 °C | 1000.25 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |