Oakford, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.9 °F (low) to 63 °F (high). Annual precipitation averages 39.4 Inches. Oakford 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.2 °F | 34.4 °F | 2.1 in. |
| February | 20.6 °F | 39.1 °F | 1.93 in. |
| March | 30.3 °F | 51.2 °F | 2.59 in. |
| April | 40.8 °F | 64.1 °F | 3.92 in. |
| May | 52.6 °F | 74.5 °F | 4.72 in. |
| June | 62.0 °F | 83.1 °F | 4.7 in. |
| July | 65.0 °F | 86.1 °F | 4.16 in. |
| August | 62.8 °F | 84.8 °F | 3.52 in. |
| September | 54.4 °F | 79.6 °F | 3.46 in. |
| October | 42.4 °F | 66.9 °F | 3.12 in. |
| November | 31.9 °F | 52.0 °F | 2.89 in. |
| December | 22.9 °F | 39.7 °F | 2.25 in. |
| Annual | 41.9 °F | 63 °F | 39.36 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°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 |