Ayrshire, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.3 °F (low) to 56.5 °F (high). Annual precipitation averages 32.6 Inches. Ayrshire is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.6 °F | 24.9 °F | 0.76 in. |
| February | 11.8 °F | 29.1 °F | 0.9 in. |
| March | 23.7 °F | 42.2 °F | 1.77 in. |
| April | 35.6 °F | 57.7 °F | 3.53 in. |
| May | 48.1 °F | 69.6 °F | 4.48 in. |
| June | 58.8 °F | 79.8 °F | 5.23 in. |
| July | 62.2 °F | 83.1 °F | 3.75 in. |
| August | 59.6 °F | 80.5 °F | 4.12 in. |
| September | 51.1 °F | 74.8 °F | 3.25 in. |
| October | 38.2 °F | 61.2 °F | 2.33 in. |
| November | 25.2 °F | 44.3 °F | 1.46 in. |
| December | 13.9 °F | 30.2 °F | 1.06 in. |
| Annual | 36.3 °F | 56.5 °F | 32.64 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |