Altoona, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.8 °F (low) to 68.2 °F (high). Annual precipitation averages 42.8 Inches. Altoona 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 | 21.9 °F | 43.4 °F | 1.38 in. |
| February | 25.6 °F | 48.3 °F | 1.65 in. |
| March | 34.9 °F | 58.5 °F | 2.75 in. |
| April | 44.7 °F | 68.2 °F | 4.47 in. |
| May | 55.6 °F | 76.4 °F | 6.29 in. |
| June | 65.2 °F | 85.4 °F | 5.76 in. |
| July | 69.3 °F | 90.7 °F | 4.21 in. |
| August | 67.4 °F | 90.2 °F | 3.99 in. |
| September | 58.4 °F | 82.1 °F | 4.15 in. |
| October | 45.8 °F | 70.8 °F | 3.84 in. |
| November | 34.7 °F | 57.7 °F | 2.39 in. |
| December | 25.7 °F | 46.4 °F | 1.87 in. |
| Annual | 45.8 °F | 68.2 °F | 42.75 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |