Floyd, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.4 °F (low) to 56.1 °F (high). Annual precipitation averages 37.7 Inches. Floyd 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 | 7.9 °F | 24.6 °F | 1.0 in. |
| February | 11.8 °F | 29.0 °F | 1.14 in. |
| March | 23.8 °F | 41.8 °F | 1.95 in. |
| April | 35.7 °F | 57.6 °F | 3.83 in. |
| May | 47.9 °F | 69.6 °F | 5.1 in. |
| June | 58.5 °F | 79.1 °F | 6.21 in. |
| July | 61.9 °F | 82.1 °F | 4.73 in. |
| August | 59.2 °F | 80.0 °F | 4.21 in. |
| September | 50.7 °F | 74.1 °F | 3.68 in. |
| October | 38.3 °F | 60.7 °F | 2.72 in. |
| November | 26.1 °F | 43.9 °F | 1.75 in. |
| December | 14.8 °F | 30.4 °F | 1.37 in. |
| Annual | 36.4 °F | 56.1 °F | 37.69 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 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |