Kiester, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2 °C (low) to 12.8 °C (high). Annual precipitation averages 878.8 Millimeters. Kiester 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 | -14.3 °C | -4.8 °C | 20.32 mm |
| February | -12 °C | -2.3 °C | 23.11 mm |
| March | -5 °C | 4.7 °C | 46.23 mm |
| April | 1.6 °C | 13.4 °C | 89.66 mm |
| May | 8.5 °C | 20.3 °C | 123.95 mm |
| June | 14.6 °C | 25.8 °C | 135.64 mm |
| July | 16.4 °C | 27.6 °C | 117.6 mm |
| August | 14.9 °C | 26.3 °C | 103.38 mm |
| September | 10.1 °C | 22.9 °C | 90.17 mm |
| October | 3 °C | 15.3 °C | 59.94 mm |
| November | -3.8 °C | 6.1 °C | 38.86 mm |
| December | -10.4 °C | -1.7 °C | 29.97 mm |
| Annual | 2 °C | 12.8 °C | 878.83 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |