Guthrie Center, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.3 °C (low) to 15.3 °C (high). Annual precipitation averages 917 Millimeters. Guthrie Center is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.8 °C | -1.4 °C | 19.3 mm |
| February | -9.6 °C | 1.3 °C | 26.42 mm |
| March | -3.4 °C | 8.4 °C | 48.01 mm |
| April | 2.7 °C | 16.1 °C | 95.76 mm |
| May | 9.6 °C | 22.1 °C | 134.11 mm |
| June | 15.4 °C | 27.4 °C | 140.46 mm |
| July | 17.5 °C | 29.3 °C | 111.51 mm |
| August | 15.8 °C | 28.2 °C | 106.68 mm |
| September | 10.8 °C | 24.9 °C | 88.65 mm |
| October | 4 °C | 17.6 °C | 70.36 mm |
| November | -2.8 °C | 8.7 °C | 43.69 mm |
| December | -8.7 °C | 1.3 °C | 32 mm |
| Annual | 3.3 °C | 15.3 °C | 916.95 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |