Quasqueton, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.1 °F (low) to 57.7 °F (high). Annual precipitation averages 38 Inches. Quasqueton 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 | 9.6 °F | 26.8 °F | 1.14 in. |
| February | 13.5 °F | 31.2 °F | 1.24 in. |
| March | 25.1 °F | 44.4 °F | 2.03 in. |
| April | 36.3 °F | 59.0 °F | 3.75 in. |
| May | 48.1 °F | 70.6 °F | 4.66 in. |
| June | 58.5 °F | 80.0 °F | 5.91 in. |
| July | 61.9 °F | 83.2 °F | 4.56 in. |
| August | 59.3 °F | 81.3 °F | 4.35 in. |
| September | 50.7 °F | 75.2 °F | 3.72 in. |
| October | 38.9 °F | 62.0 °F | 2.89 in. |
| November | 26.9 °F | 45.7 °F | 2.13 in. |
| December | 16.2 °F | 32.5 °F | 1.57 in. |
| Annual | 37.1 °F | 57.7 °F | 37.95 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |