Rolfe, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.8 °F (low) to 56.9 °F (high). Annual precipitation averages 33.6 Inches. Rolfe 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 | 25.6 °F | 0.88 in. |
| February | 12.5 °F | 29.8 °F | 1.03 in. |
| March | 24.5 °F | 43.2 °F | 1.95 in. |
| April | 35.9 °F | 58.3 °F | 3.59 in. |
| May | 48.4 °F | 69.9 °F | 4.63 in. |
| June | 59.4 °F | 80.1 °F | 5.15 in. |
| July | 62.7 °F | 83.0 °F | 3.84 in. |
| August | 59.9 °F | 80.5 °F | 4.4 in. |
| September | 50.9 °F | 74.8 °F | 3.03 in. |
| October | 38.4 °F | 61.7 °F | 2.32 in. |
| November | 25.8 °F | 44.7 °F | 1.56 in. |
| December | 14.6 °F | 30.9 °F | 1.22 in. |
| Annual | 36.8 °F | 56.9 °F | 33.6 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |