Templeton, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.2 °C (low) to 14.5 °C (high). Annual precipitation averages 861.8 Millimeters. Templeton 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 | -11.8 °C | -2.2 °C | 20.32 mm |
| February | -9.7 °C | 0.3 °C | 26.67 mm |
| March | -3.6 °C | 7.8 °C | 48.01 mm |
| April | 2.3 °C | 15.2 °C | 89.66 mm |
| May | 9.3 °C | 21.2 °C | 122.94 mm |
| June | 15.3 °C | 26.9 °C | 129.54 mm |
| July | 17.3 °C | 28.5 °C | 101.85 mm |
| August | 15.8 °C | 27.3 °C | 104.9 mm |
| September | 10.8 °C | 24.1 °C | 81.28 mm |
| October | 4.3 °C | 16.9 °C | 67.06 mm |
| November | -3.1 °C | 7.8 °C | 37.85 mm |
| December | -8.6 °C | 0.6 °C | 31.75 mm |
| Annual | 3.2 °C | 14.5 °C | 861.83 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 |