North Star, Delaware has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.3 °F (low) to 63.2 °F (high). Annual precipitation averages 48 Inches. North Star is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.5 °F | 39.9 °F | 3.53 in. |
| February | 24.2 °F | 42.1 °F | 2.87 in. |
| March | 31.5 °F | 50.5 °F | 4.32 in. |
| April | 42.0 °F | 62.4 °F | 3.68 in. |
| May | 51.8 °F | 72.0 °F | 3.84 in. |
| June | 60.9 °F | 80.9 °F | 4.58 in. |
| July | 66.1 °F | 85.4 °F | 4.87 in. |
| August | 64.6 °F | 83.8 °F | 4.29 in. |
| September | 57.4 °F | 77.4 °F | 4.55 in. |
| October | 45.4 °F | 65.6 °F | 4.17 in. |
| November | 35.8 °F | 54.1 °F | 3.3 in. |
| December | 28.7 °F | 44.2 °F | 4.03 in. |
| Annual | 44.3 °F | 63.2 °F | 48.03 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |