Oxford, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.9 °C (low) to 15.1 °C (high). Annual precipitation averages 947.9 Millimeters. Oxford is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11 °C | -1.7 °C | 29.21 mm |
| February | -8.9 °C | 0.9 °C | 34.8 mm |
| March | -2.8 °C | 8.2 °C | 55.37 mm |
| April | 3.4 °C | 15.9 °C | 94.49 mm |
| May | 10.1 °C | 22.1 °C | 118.87 mm |
| June | 15.9 °C | 27.2 °C | 134.37 mm |
| July | 17.7 °C | 29 °C | 111 mm |
| August | 16.3 °C | 28 °C | 109.73 mm |
| September | 11.4 °C | 24.6 °C | 90.42 mm |
| October | 4.7 °C | 17.3 °C | 73.41 mm |
| November | -1.9 °C | 8.7 °C | 54.86 mm |
| December | -7.7 °C | 1.3 °C | 41.4 mm |
| Annual | 3.9 °C | 15.1 °C | 947.93 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |