Ricketts, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.4 °F (low) to 58.8 °F (high). Annual precipitation averages 32.3 Inches. Ricketts 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 | 9.9 °F | 28.4 °F | 0.69 in. |
| February | 14.1 °F | 33.4 °F | 0.91 in. |
| March | 25.2 °F | 46.7 °F | 1.74 in. |
| April | 36.2 °F | 60.2 °F | 3.36 in. |
| May | 48.6 °F | 71.1 °F | 4.55 in. |
| June | 59.4 °F | 81.0 °F | 4.82 in. |
| July | 63.2 °F | 84.1 °F | 3.87 in. |
| August | 60.4 °F | 82.0 °F | 4.33 in. |
| September | 51.4 °F | 76.0 °F | 3.16 in. |
| October | 39.0 °F | 63.1 °F | 2.29 in. |
| November | 25.9 °F | 46.8 °F | 1.37 in. |
| December | 15.7 °F | 33.3 °F | 1.16 in. |
| Annual | 37.4 °F | 58.8 °F | 32.25 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 |