Parker, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.4 °F (low) to 66.5 °F (high). Annual precipitation averages 41.1 Inches. Parker is located in USDA Plant Hardiness Zone 6b. 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 | 21.3 °F | 40.8 °F | 1.3 in. |
| February | 24.8 °F | 45.4 °F | 1.69 in. |
| March | 34.2 °F | 56.5 °F | 2.59 in. |
| April | 44.1 °F | 66.5 °F | 4.14 in. |
| May | 55.1 °F | 75.3 °F | 5.78 in. |
| June | 64.7 °F | 84.5 °F | 5.43 in. |
| July | 68.9 °F | 89.5 °F | 4.23 in. |
| August | 66.8 °F | 88.6 °F | 3.96 in. |
| September | 58.3 °F | 80.9 °F | 4.41 in. |
| October | 46.1 °F | 69.4 °F | 3.48 in. |
| November | 34.8 °F | 56.0 °F | 2.31 in. |
| December | 25.4 °F | 44.0 °F | 1.73 in. |
| Annual | 45.4 °F | 66.5 °F | 41.05 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 |