Havana, Kansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.3 °F (low) to 69 °F (high). Annual precipitation averages 43.1 Inches. Havana is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.7 °F | 45.0 °F | 1.51 in. |
| February | 26.2 °F | 49.7 °F | 1.98 in. |
| March | 35.6 °F | 59.5 °F | 3.03 in. |
| April | 45.3 °F | 68.7 °F | 4.53 in. |
| May | 56.0 °F | 76.7 °F | 6.36 in. |
| June | 65.5 °F | 85.7 °F | 5.61 in. |
| July | 69.8 °F | 91.0 °F | 4.07 in. |
| August | 67.7 °F | 90.6 °F | 3.9 in. |
| September | 59.3 °F | 82.8 °F | 3.8 in. |
| October | 46.7 °F | 71.4 °F | 4.17 in. |
| November | 35.3 °F | 58.9 °F | 2.14 in. |
| December | 26.0 °F | 47.7 °F | 2.04 in. |
| Annual | 46.3 °F | 69 °F | 43.14 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |