Nodaway, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.4 °F (low) to 60.9 °F (high). Annual precipitation averages 35.8 Inches. Nodaway 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 | 12.7 °F | 31.9 °F | 0.82 in. |
| February | 16.8 °F | 37.0 °F | 1.11 in. |
| March | 27.6 °F | 49.8 °F | 2.09 in. |
| April | 38.1 °F | 62.0 °F | 3.44 in. |
| May | 50.5 °F | 72.2 °F | 5.48 in. |
| June | 60.8 °F | 81.3 °F | 5.34 in. |
| July | 64.6 °F | 85.1 °F | 4.17 in. |
| August | 62.0 °F | 83.6 °F | 3.7 in. |
| September | 52.8 °F | 77.2 °F | 3.48 in. |
| October | 40.5 °F | 64.7 °F | 2.92 in. |
| November | 28.3 °F | 49.4 °F | 1.94 in. |
| December | 18.1 °F | 36.7 °F | 1.27 in. |
| Annual | 39.4 °F | 60.9 °F | 35.76 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 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |