Nortonville, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.1 °F (low) to 65.1 °F (high). Annual precipitation averages 37.7 Inches. Nortonville 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.2 °F | 38.3 °F | 0.91 in. |
| February | 22.8 °F | 43.4 °F | 1.29 in. |
| March | 32.5 °F | 55.1 °F | 2.24 in. |
| April | 43.1 °F | 65.6 °F | 3.73 in. |
| May | 53.8 °F | 75.1 °F | 5.21 in. |
| June | 63.7 °F | 84.2 °F | 5.03 in. |
| July | 68.4 °F | 88.9 °F | 4.73 in. |
| August | 66.1 °F | 87.7 °F | 4.3 in. |
| September | 57.3 °F | 80.0 °F | 3.81 in. |
| October | 45.6 °F | 68.0 °F | 3.04 in. |
| November | 33.7 °F | 53.9 °F | 1.91 in. |
| December | 23.2 °F | 41.5 °F | 1.47 in. |
| Annual | 44.1 °F | 65.1 °F | 37.67 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 |