Paullina, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.3 °C (low) to 14 °C (high). Annual precipitation averages 782.3 Millimeters. Paullina is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.4 °C | -3.3 °C | 19.3 mm |
| February | -11.1 °C | -0.8 °C | 26.16 mm |
| March | -4.6 °C | 6.4 °C | 42.42 mm |
| April | 1.6 °C | 14.7 °C | 84.58 mm |
| May | 8.8 °C | 21.3 °C | 104.14 mm |
| June | 14.8 °C | 26.8 °C | 121.41 mm |
| July | 16.8 °C | 28.7 °C | 89.15 mm |
| August | 15.4 °C | 27.3 °C | 99.06 mm |
| September | 10.4 °C | 23.9 °C | 83.57 mm |
| October | 3.3 °C | 16.5 °C | 56.39 mm |
| November | -4.1 °C | 7.1 °C | 35.31 mm |
| December | -10.2 °C | -0.6 °C | 20.83 mm |
| Annual | 2.3 °C | 14 °C | 782.32 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |