Orient, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.5 °F (low) to 60.2 °F (high). Annual precipitation averages 35.7 Inches. Orient 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.7 °F | 30.8 °F | 0.86 in. |
| February | 16.8 °F | 35.9 °F | 1.23 in. |
| March | 27.4 °F | 48.8 °F | 2.05 in. |
| April | 38.4 °F | 61.6 °F | 3.65 in. |
| May | 50.4 °F | 71.6 °F | 5.13 in. |
| June | 60.6 °F | 81.1 °F | 4.94 in. |
| July | 64.4 °F | 84.8 °F | 4.07 in. |
| August | 62.2 °F | 83.3 °F | 3.98 in. |
| September | 53.4 °F | 76.6 °F | 3.74 in. |
| October | 40.9 °F | 64.1 °F | 2.77 in. |
| November | 28.7 °F | 48.6 °F | 1.9 in. |
| December | 18.3 °F | 35.6 °F | 1.35 in. |
| Annual | 39.5 °F | 60.2 °F | 35.67 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 |