Farina, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7 °C (low) to 18.2 °C (high). Annual precipitation averages 1135.7 Millimeters. Farina 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 | -5.8 °C | 3.2 °C | 76.71 mm |
| February | -3.9 °C | 5.8 °C | 61.98 mm |
| March | 0.9 °C | 11.8 °C | 91.19 mm |
| April | 6.6 °C | 18.6 °C | 118.11 mm |
| May | 12.7 °C | 24 °C | 124.46 mm |
| June | 17.6 °C | 29 °C | 122.94 mm |
| July | 19.3 °C | 30.6 °C | 107.7 mm |
| August | 17.9 °C | 30 °C | 90.42 mm |
| September | 13.3 °C | 26.8 °C | 84.58 mm |
| October | 7 °C | 20.2 °C | 86.11 mm |
| November | 1.4 °C | 12.1 °C | 97.54 mm |
| December | -3.1 °C | 5.7 °C | 73.91 mm |
| Annual | 7 °C | 18.2 °C | 1135.65 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 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 |