Sawyerville, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7 °C (low) to 17.8 °C (high). Annual precipitation averages 1077 Millimeters. Sawyerville is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.1 °C | 2.7 °C | 64.77 mm |
| February | -4.2 °C | 5.6 °C | 57.66 mm |
| March | 0.8 °C | 11.7 °C | 79.5 mm |
| April | 6.6 °C | 18.3 °C | 121.92 mm |
| May | 12.7 °C | 23.7 °C | 128.27 mm |
| June | 17.7 °C | 28.6 °C | 110.49 mm |
| July | 19.4 °C | 30.2 °C | 102.11 mm |
| August | 18.3 °C | 29.7 °C | 88.14 mm |
| September | 13.6 °C | 26.5 °C | 85.34 mm |
| October | 7.2 °C | 19.8 °C | 82.04 mm |
| November | 1.6 °C | 11.8 °C | 89.66 mm |
| December | -3.3 °C | 5.4 °C | 67.06 mm |
| Annual | 7 °C | 17.8 °C | 1076.96 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |