Lowell, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.3 °F (low) to 59.9 °F (high). Annual precipitation averages 40.3 Inches. Lowell is located in USDA Plant Hardiness Zone 5b. 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 | 16.3 °F | 31.9 °F | 2.32 in. |
| February | 19.0 °F | 36.0 °F | 2.0 in. |
| March | 28.1 °F | 47.2 °F | 2.35 in. |
| April | 38.4 °F | 60.3 °F | 3.7 in. |
| May | 49.6 °F | 71.1 °F | 4.33 in. |
| June | 59.5 °F | 80.5 °F | 4.92 in. |
| July | 63.1 °F | 83.5 °F | 4.56 in. |
| August | 61.3 °F | 82.0 °F | 4.3 in. |
| September | 53.3 °F | 76.4 °F | 3.35 in. |
| October | 41.8 °F | 64.0 °F | 3.52 in. |
| November | 31.6 °F | 49.3 °F | 2.72 in. |
| December | 22.0 °F | 37.1 °F | 2.2 in. |
| Annual | 40.3 °F | 59.9 °F | 40.27 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 5b : -15°F to -10°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 |