Blencoe, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38 °F (low) to 60.8 °F (high). Annual precipitation averages 32.6 Inches. Blencoe 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 | 11.1 °F | 30.8 °F | 0.71 in. |
| February | 15.0 °F | 35.5 °F | 0.91 in. |
| March | 26.1 °F | 48.9 °F | 1.78 in. |
| April | 36.9 °F | 62.2 °F | 3.55 in. |
| May | 49.3 °F | 72.9 °F | 4.56 in. |
| June | 60.2 °F | 82.9 °F | 4.85 in. |
| July | 63.9 °F | 86.2 °F | 3.71 in. |
| August | 61.1 °F | 83.9 °F | 4.1 in. |
| September | 51.8 °F | 77.9 °F | 3.42 in. |
| October | 38.9 °F | 64.8 °F | 2.35 in. |
| November | 26.1 °F | 48.9 °F | 1.45 in. |
| December | 15.9 °F | 35.1 °F | 1.18 in. |
| Annual | 38 °F | 60.8 °F | 32.57 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 |