Carlisle, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 15.8 °C (high). Annual precipitation averages 903.8 Millimeters. Carlisle is located in USDA Plant Hardiness Zone 5b. 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 | -10.3 °C | -0.7 °C | 24.89 mm |
| February | -8.2 °C | 1.9 °C | 31.75 mm |
| March | -2.1 °C | 9.1 °C | 51.82 mm |
| April | 4.2 °C | 16.6 °C | 93.73 mm |
| May | 10.9 °C | 22.3 °C | 129.29 mm |
| June | 16.6 °C | 27.7 °C | 130.56 mm |
| July | 18.7 °C | 29.8 °C | 105.92 mm |
| August | 17.3 °C | 28.8 °C | 104.39 mm |
| September | 12.4 °C | 25.2 °C | 87.63 mm |
| October | 5.6 °C | 17.8 °C | 65.28 mm |
| November | -1.2 °C | 9.4 °C | 44.96 mm |
| December | -7.1 °C | 2.2 °C | 33.53 mm |
| Annual | 4.7 °C | 15.8 °C | 903.75 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |