Oxford Junction, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.3 °F (low) to 58.9 °F (high). Annual precipitation averages 38 Inches. Oxford Junction is located in USDA Plant Hardiness Zone 5a. 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 | 11.6 °F | 28.5 °F | 1.37 in. |
| February | 15.1 °F | 32.9 °F | 1.6 in. |
| March | 26.4 °F | 46.1 °F | 2.36 in. |
| April | 37.3 °F | 60.3 °F | 3.77 in. |
| May | 49.2 °F | 71.5 °F | 4.51 in. |
| June | 59.5 °F | 80.8 °F | 5.13 in. |
| July | 62.6 °F | 83.7 °F | 4.34 in. |
| August | 60.3 °F | 82.1 °F | 4.26 in. |
| September | 51.6 °F | 76.0 °F | 3.69 in. |
| October | 40.0 °F | 63.0 °F | 3.0 in. |
| November | 28.3 °F | 47.4 °F | 2.22 in. |
| December | 18.1 °F | 34.2 °F | 1.75 in. |
| Annual | 38.3 °F | 58.9 °F | 38 in. |
| 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 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |