Dickens, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.2 °C (low) to 13.6 °C (high). Annual precipitation averages 792 Millimeters. Dickens 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 | -13.7 °C | -4 °C | 18.03 mm |
| February | -11.4 °C | -1.7 °C | 21.08 mm |
| March | -4.8 °C | 5.6 °C | 41.4 mm |
| April | 1.8 °C | 14.1 °C | 86.36 mm |
| May | 8.8 °C | 20.8 °C | 110.49 mm |
| June | 14.8 °C | 26.6 °C | 122.43 mm |
| July | 16.8 °C | 28.6 °C | 93.73 mm |
| August | 15.2 °C | 27.1 °C | 97.03 mm |
| September | 10.4 °C | 23.8 °C | 81.28 mm |
| October | 3.2 °C | 16 °C | 59.69 mm |
| November | -4 °C | 6.8 °C | 36.07 mm |
| December | -10.3 °C | -1.1 °C | 24.38 mm |
| Annual | 2.2 °C | 13.6 °C | 791.97 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |