Van Meter, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.1 °C (low) to 15.8 °C (high). Annual precipitation averages 872.2 Millimeters. Van Meter 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 | -10.9 °C | -0.9 °C | 23.37 mm |
| February | -8.8 °C | 1.7 °C | 28.96 mm |
| March | -2.7 °C | 8.9 °C | 49.53 mm |
| April | 3.6 °C | 16.4 °C | 89.41 mm |
| May | 10.2 °C | 22.3 °C | 117.09 mm |
| June | 15.9 °C | 27.6 °C | 132.08 mm |
| July | 18.2 °C | 29.9 °C | 101.09 mm |
| August | 16.6 °C | 28.9 °C | 102.62 mm |
| September | 11.7 °C | 25.5 °C | 85.34 mm |
| October | 5 °C | 17.8 °C | 64.52 mm |
| November | -1.8 °C | 9.2 °C | 44.96 mm |
| December | -7.8 °C | 1.9 °C | 33.27 mm |
| Annual | 4.1 °C | 15.8 °C | 872.24 mm |
| 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 : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |