Rosalia, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.5 °C (low) to 19.9 °C (high). Annual precipitation averages 984.3 Millimeters. Rosalia is located in USDA Plant Hardiness Zone 7a. 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 | -5.3 °C | 6.2 °C | 23.88 mm |
| February | -3.9 °C | 8.7 °C | 37.85 mm |
| March | 1.2 °C | 14.7 °C | 66.8 mm |
| April | 6.6 °C | 19.9 °C | 88.39 mm |
| May | 12.8 °C | 24.4 °C | 141.22 mm |
| June | 18.2 °C | 29.7 °C | 140.72 mm |
| July | 20.6 °C | 32.5 °C | 107.44 mm |
| August | 19.5 °C | 31.8 °C | 103.12 mm |
| September | 14.9 °C | 28 °C | 102.87 mm |
| October | 8 °C | 21.5 °C | 85.34 mm |
| November | 1.3 °C | 13.6 °C | 51.31 mm |
| December | -3.9 °C | 7.2 °C | 35.31 mm |
| Annual | 7.5 °C | 19.9 °C | 984.25 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |