Wever, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.1 °C (low) to 16.5 °C (high). Annual precipitation averages 1006.6 Millimeters. Wever is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.4 °C | 0.6 °C | 42.93 mm |
| February | -6.3 °C | 3.2 °C | 48.01 mm |
| March | -0.6 °C | 9.9 °C | 65.79 mm |
| April | 5.5 °C | 17 °C | 96.01 mm |
| May | 11.9 °C | 22.8 °C | 135.64 mm |
| June | 17.3 °C | 27.9 °C | 125.22 mm |
| July | 19.4 °C | 29.9 °C | 107.19 mm |
| August | 18.2 °C | 29.1 °C | 98.81 mm |
| September | 13.5 °C | 25.6 °C | 95 mm |
| October | 6.9 °C | 18.6 °C | 77.72 mm |
| November | 0.5 °C | 10.3 °C | 65.02 mm |
| December | -5.2 °C | 3.4 °C | 49.28 mm |
| Annual | 6.1 °C | 16.5 °C | 1006.62 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |