Bloomingdale, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.7 °F (low) to 63.3 °F (high). Annual precipitation averages 44.6 Inches. Bloomingdale 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.5 °F | 35.5 °F | 2.99 in. |
| February | 22.4 °F | 40.4 °F | 2.58 in. |
| March | 31.6 °F | 51.5 °F | 3.32 in. |
| April | 41.8 °F | 64.7 °F | 4.66 in. |
| May | 52.5 °F | 75.0 °F | 4.89 in. |
| June | 61.6 °F | 83.4 °F | 5.08 in. |
| July | 64.5 °F | 86.0 °F | 4.24 in. |
| August | 62.3 °F | 84.7 °F | 3.5 in. |
| September | 54.5 °F | 79.3 °F | 3.13 in. |
| October | 43.4 °F | 67.3 °F | 3.63 in. |
| November | 33.3 °F | 52.1 °F | 3.62 in. |
| December | 24.5 °F | 40.1 °F | 2.95 in. |
| Annual | 42.7 °F | 63.3 °F | 44.59 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 |