Dixon, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40 °F (low) to 59.6 °F (high). Annual precipitation averages 38.3 Inches. Dixon 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.3 °F | 29.6 °F | 1.37 in. |
| February | 16.9 °F | 34.1 °F | 1.64 in. |
| March | 27.8 °F | 47.1 °F | 2.45 in. |
| April | 38.9 °F | 60.8 °F | 3.82 in. |
| May | 50.8 °F | 71.9 °F | 4.75 in. |
| June | 60.9 °F | 81.2 °F | 4.95 in. |
| July | 64.3 °F | 84.1 °F | 4.29 in. |
| August | 62.1 °F | 82.4 °F | 4.29 in. |
| September | 53.7 °F | 76.6 °F | 3.74 in. |
| October | 41.9 °F | 63.6 °F | 2.98 in. |
| November | 29.9 °F | 48.4 °F | 2.22 in. |
| December | 19.5 °F | 35.2 °F | 1.84 in. |
| Annual | 40 °F | 59.6 °F | 38.34 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 |