Maquoketa, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.1 °F (low) to 58.3 °F (high). Annual precipitation averages 36.5 Inches. Maquoketa 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 | 11.3 °F | 28.1 °F | 1.34 in. |
| February | 14.9 °F | 32.5 °F | 1.58 in. |
| March | 26.1 °F | 45.7 °F | 2.2 in. |
| April | 37.0 °F | 59.6 °F | 3.59 in. |
| May | 49.0 °F | 71.0 °F | 4.24 in. |
| June | 59.3 °F | 80.2 °F | 5.09 in. |
| July | 62.5 °F | 83.1 °F | 4.16 in. |
| August | 60.2 °F | 81.4 °F | 4.09 in. |
| September | 51.5 °F | 75.4 °F | 3.49 in. |
| October | 39.8 °F | 62.4 °F | 2.96 in. |
| November | 28.2 °F | 46.8 °F | 2.06 in. |
| December | 17.8 °F | 33.8 °F | 1.71 in. |
| Annual | 38.1 °F | 58.3 °F | 36.51 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 |