Cicero, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.2 °F (low) to 61.6 °F (high). Annual precipitation averages 42.5 Inches. Cicero 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 | 19.0 °F | 34.7 °F | 2.81 in. |
| February | 21.7 °F | 38.8 °F | 2.31 in. |
| March | 30.3 °F | 49.6 °F | 3.2 in. |
| April | 40.8 °F | 62.4 °F | 4.26 in. |
| May | 52.1 °F | 72.7 °F | 4.63 in. |
| June | 61.2 °F | 81.1 °F | 5.08 in. |
| July | 63.9 °F | 84.0 °F | 4.2 in. |
| August | 62.1 °F | 82.8 °F | 3.33 in. |
| September | 54.5 °F | 77.5 °F | 3.33 in. |
| October | 43.3 °F | 65.3 °F | 3.13 in. |
| November | 33.1 °F | 51.1 °F | 3.33 in. |
| December | 24.4 °F | 39.3 °F | 2.85 in. |
| Annual | 42.2 °F | 61.6 °F | 42.46 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |