Dakota, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.3 °C (low) to 14.1 °C (high). Annual precipitation averages 961.4 Millimeters. Dakota 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.3 °C | -2.3 °C | 39.12 mm |
| February | -9.3 °C | 0.1 °C | 41.66 mm |
| March | -3.6 °C | 6.8 °C | 53.09 mm |
| April | 2.4 °C | 14.4 °C | 93.98 mm |
| May | 8.9 °C | 20.8 °C | 109.47 mm |
| June | 14.6 °C | 26.2 °C | 137.67 mm |
| July | 16.5 °C | 27.8 °C | 106.43 mm |
| August | 15.4 °C | 26.9 °C | 101.35 mm |
| September | 10.7 °C | 23.3 °C | 99.06 mm |
| October | 4.4 °C | 16.2 °C | 74.68 mm |
| November | -1.7 °C | 7.8 °C | 57.66 mm |
| December | -7.6 °C | 0.7 °C | 47.24 mm |
| Annual | 3.3 °C | 14.1 °C | 961.41 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |