Rockdale, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.7 °F (low) to 56.8 °F (high). Annual precipitation averages 37.3 Inches. Rockdale 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 | 11.2 °F | 27.1 °F | 1.54 in. |
| February | 14.2 °F | 31.0 °F | 1.57 in. |
| March | 24.7 °F | 43.3 °F | 2.09 in. |
| April | 36.0 °F | 56.8 °F | 3.76 in. |
| May | 47.8 °F | 69.1 °F | 4.23 in. |
| June | 57.7 °F | 78.7 °F | 5.33 in. |
| July | 62.0 °F | 82.5 °F | 4.13 in. |
| August | 60.1 °F | 80.6 °F | 4.2 in. |
| September | 51.7 °F | 73.8 °F | 3.52 in. |
| October | 39.9 °F | 60.4 °F | 2.9 in. |
| November | 28.7 °F | 45.5 °F | 2.24 in. |
| December | 18.1 °F | 32.7 °F | 1.79 in. |
| Annual | 37.7 °F | 56.8 °F | 37.3 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 5a : -20°F to -15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |