Bayard, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.2 °C (low) to 15.1 °C (high). Annual precipitation averages 889.3 Millimeters. Bayard 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 | -12 °C | -1.8 °C | 21.59 mm |
| February | -9.7 °C | 0.8 °C | 28.7 mm |
| March | -3.5 °C | 8.2 °C | 50.8 mm |
| April | 2.6 °C | 15.9 °C | 93.98 mm |
| May | 9.5 °C | 21.9 °C | 126.75 mm |
| June | 15.4 °C | 27.3 °C | 133.6 mm |
| July | 17.4 °C | 29.2 °C | 105.66 mm |
| August | 15.8 °C | 27.9 °C | 99.06 mm |
| September | 10.8 °C | 24.8 °C | 84.33 mm |
| October | 4 °C | 17.5 °C | 70.87 mm |
| November | -2.9 °C | 8.4 °C | 40.64 mm |
| December | -8.7 °C | 1.1 °C | 33.27 mm |
| Annual | 3.2 °C | 15.1 °C | 889.25 mm |
| 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 : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |