McIntire, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 34.8 °F (low) to 54.3 °F (high). Annual precipitation averages 36.3 Inches. McIntire is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.2 °F | 22.9 °F | 0.97 in. |
| February | 10.1 °F | 27.3 °F | 1.04 in. |
| March | 22.1 °F | 39.9 °F | 1.82 in. |
| April | 34.1 °F | 55.3 °F | 3.81 in. |
| May | 46.3 °F | 67.7 °F | 4.77 in. |
| June | 56.9 °F | 77.3 °F | 5.8 in. |
| July | 60.3 °F | 80.6 °F | 4.49 in. |
| August | 57.7 °F | 78.5 °F | 4.2 in. |
| September | 49.2 °F | 72.3 °F | 3.63 in. |
| October | 37.0 °F | 58.7 °F | 2.74 in. |
| November | 24.8 °F | 42.3 °F | 1.68 in. |
| December | 13.2 °F | 28.7 °F | 1.38 in. |
| Annual | 34.8 °F | 54.3 °F | 36.33 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |