Bassett, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.6 °F (low) to 56.3 °F (high). Annual precipitation averages 37.7 Inches. Bassett 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 | 8.3 °F | 25.1 °F | 1.02 in. |
| February | 12.2 °F | 29.3 °F | 1.1 in. |
| March | 24.2 °F | 42.4 °F | 2.01 in. |
| April | 35.9 °F | 57.7 °F | 3.74 in. |
| May | 48.1 °F | 69.7 °F | 5.12 in. |
| June | 58.6 °F | 79.2 °F | 6.04 in. |
| July | 62.0 °F | 82.1 °F | 4.94 in. |
| August | 59.3 °F | 80.0 °F | 4.3 in. |
| September | 50.8 °F | 74.2 °F | 3.69 in. |
| October | 38.4 °F | 60.9 °F | 2.6 in. |
| November | 26.3 °F | 44.2 °F | 1.77 in. |
| December | 15.1 °F | 30.7 °F | 1.4 in. |
| Annual | 36.6 °F | 56.3 °F | 37.73 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 |