Biggsville, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.2 °F (low) to 61 °F (high). Annual precipitation averages 38.1 Inches. Biggsville 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.2 °F | 31.7 °F | 1.58 in. |
| February | 18.8 °F | 36.3 °F | 1.81 in. |
| March | 29.3 °F | 49.2 °F | 2.46 in. |
| April | 40.1 °F | 62.1 °F | 3.79 in. |
| May | 52.1 °F | 72.8 °F | 5.05 in. |
| June | 61.8 °F | 81.9 °F | 4.75 in. |
| July | 65.0 °F | 85.1 °F | 3.99 in. |
| August | 62.8 °F | 83.4 °F | 3.73 in. |
| September | 54.6 °F | 77.6 °F | 3.7 in. |
| October | 42.8 °F | 64.9 °F | 2.9 in. |
| November | 31.2 °F | 49.7 °F | 2.44 in. |
| December | 21.2 °F | 37.0 °F | 1.87 in. |
| Annual | 41.2 °F | 61 °F | 38.07 in. |
| 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 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 |