Olpe, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.2 °F (low) to 66.5 °F (high). Annual precipitation averages 36.6 Inches. Olpe 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 | 19.6 °F | 40.9 °F | 0.91 in. |
| February | 23.1 °F | 45.6 °F | 1.45 in. |
| March | 32.6 °F | 56.6 °F | 2.44 in. |
| April | 43.0 °F | 66.6 °F | 3.58 in. |
| May | 54.4 °F | 75.2 °F | 5.23 in. |
| June | 64.0 °F | 84.5 °F | 4.78 in. |
| July | 68.3 °F | 89.7 °F | 4.23 in. |
| August | 66.3 °F | 88.7 °F | 3.84 in. |
| September | 57.6 °F | 81.1 °F | 3.51 in. |
| October | 44.7 °F | 69.0 °F | 3.07 in. |
| November | 33.3 °F | 56.0 °F | 2.06 in. |
| December | 23.4 °F | 44.1 °F | 1.47 in. |
| Annual | 44.2 °F | 66.5 °F | 36.57 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 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 |