Halstead, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.7 °F (low) to 67.3 °F (high). Annual precipitation averages 32.9 Inches. Halstead 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.1 °F | 42.3 °F | 0.74 in. |
| February | 25.2 °F | 46.7 °F | 1.24 in. |
| March | 34.5 °F | 57.3 °F | 2.32 in. |
| April | 44.0 °F | 66.7 °F | 2.79 in. |
| May | 55.1 °F | 75.8 °F | 5.11 in. |
| June | 65.2 °F | 86.5 °F | 4.79 in. |
| July | 69.3 °F | 91.0 °F | 4.16 in. |
| August | 67.6 °F | 89.4 °F | 3.83 in. |
| September | 59.3 °F | 82.1 °F | 2.61 in. |
| October | 46.5 °F | 69.8 °F | 2.56 in. |
| November | 34.5 °F | 56.2 °F | 1.52 in. |
| December | 24.9 °F | 44.3 °F | 1.19 in. |
| Annual | 45.7 °F | 67.3 °F | 32.86 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |