Wataga, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.4 °C (low) to 15.5 °C (high). Annual precipitation averages 983 Millimeters. Wataga is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10 °C | -0.8 °C | 44.7 mm |
| February | -8.2 °C | 1.7 °C | 49.28 mm |
| March | -2.3 °C | 8.9 °C | 61.98 mm |
| April | 3.6 °C | 16.2 °C | 97.79 mm |
| May | 10.4 °C | 22.2 °C | 130.56 mm |
| June | 15.8 °C | 27.1 °C | 119.89 mm |
| July | 17.6 °C | 28.7 °C | 100.84 mm |
| August | 16.4 °C | 27.8 °C | 93.73 mm |
| September | 11.7 °C | 24.6 °C | 96.27 mm |
| October | 5.2 °C | 17.6 °C | 73.66 mm |
| November | -1.1 °C | 9.2 °C | 62.48 mm |
| December | -6.7 °C | 2.2 °C | 51.82 mm |
| Annual | 4.4 °C | 15.5 °C | 983 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |