Osage City, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.5 °F (low) to 66.5 °F (high). Annual precipitation averages 38.4 Inches. Osage City is located in USDA Plant Hardiness Zone 6b. 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 | 20.0 °F | 40.6 °F | 0.96 in. |
| February | 23.5 °F | 45.3 °F | 1.52 in. |
| March | 33.3 °F | 56.6 °F | 2.52 in. |
| April | 43.2 °F | 66.8 °F | 3.73 in. |
| May | 54.6 °F | 75.7 °F | 5.72 in. |
| June | 64.3 °F | 84.7 °F | 5.05 in. |
| July | 68.3 °F | 89.7 °F | 4.32 in. |
| August | 66.3 °F | 88.4 °F | 4.18 in. |
| September | 57.7 °F | 81.0 °F | 3.77 in. |
| October | 44.9 °F | 69.0 °F | 2.99 in. |
| November | 33.8 °F | 55.8 °F | 2.12 in. |
| December | 24.0 °F | 43.8 °F | 1.56 in. |
| Annual | 44.5 °F | 66.5 °F | 38.44 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |