Guthrie Center, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.9 °F (low) to 59.6 °F (high). Annual precipitation averages 36.1 Inches. 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 | 10.8 °F | 29.4 °F | 0.76 in. |
| February | 14.8 °F | 34.4 °F | 1.04 in. |
| March | 25.8 °F | 47.2 °F | 1.89 in. |
| April | 36.9 °F | 60.9 °F | 3.77 in. |
| May | 49.3 °F | 71.7 °F | 5.28 in. |
| June | 59.7 °F | 81.3 °F | 5.53 in. |
| July | 63.5 °F | 84.8 °F | 4.39 in. |
| August | 60.5 °F | 82.7 °F | 4.2 in. |
| September | 51.5 °F | 76.8 °F | 3.49 in. |
| October | 39.2 °F | 63.6 °F | 2.77 in. |
| November | 26.9 °F | 47.7 °F | 1.72 in. |
| December | 16.4 °F | 34.4 °F | 1.26 in. |
| Annual | 37.9 °F | 59.6 °F | 36.1 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |