Dakota, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.9 °F (low) to 57.3 °F (high). Annual precipitation averages 37.9 Inches. 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 | 11.7 °F | 27.9 °F | 1.54 in. |
| February | 15.2 °F | 32.1 °F | 1.64 in. |
| March | 25.6 °F | 44.3 °F | 2.09 in. |
| April | 36.3 °F | 57.9 °F | 3.7 in. |
| May | 48.1 °F | 69.5 °F | 4.31 in. |
| June | 58.2 °F | 79.1 °F | 5.42 in. |
| July | 61.7 °F | 82.0 °F | 4.19 in. |
| August | 59.7 °F | 80.5 °F | 3.99 in. |
| September | 51.3 °F | 73.9 °F | 3.9 in. |
| October | 39.9 °F | 61.1 °F | 2.94 in. |
| November | 28.9 °F | 46.0 °F | 2.27 in. |
| December | 18.3 °F | 33.2 °F | 1.86 in. |
| Annual | 37.9 °F | 57.3 °F | 37.85 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |