Laurel, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.9 °F (low) to 58.5 °F (high). Annual precipitation averages 36.8 Inches. Laurel is located in USDA Plant Hardiness Zone 5b. 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 | 11.6 °F | 28.0 °F | 0.97 in. |
| February | 15.5 °F | 32.7 °F | 1.18 in. |
| March | 26.4 °F | 45.9 °F | 2.04 in. |
| April | 37.5 °F | 60.0 °F | 3.93 in. |
| May | 50.4 °F | 70.9 °F | 4.9 in. |
| June | 60.3 °F | 80.3 °F | 5.48 in. |
| July | 64.3 °F | 83.6 °F | 4.36 in. |
| August | 61.7 °F | 81.5 °F | 4.35 in. |
| September | 52.7 °F | 75.9 °F | 3.47 in. |
| October | 40.5 °F | 62.6 °F | 2.65 in. |
| November | 28.3 °F | 46.9 °F | 2.01 in. |
| December | 17.7 °F | 33.7 °F | 1.41 in. |
| Annual | 38.9 °F | 58.5 °F | 36.75 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 5b : -15°F to -10°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 |