Toledo, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38 °F (low) to 58.4 °F (high). Annual precipitation averages 36.2 Inches. Toledo 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 | 10.6 °F | 27.6 °F | 1.02 in. |
| February | 14.5 °F | 32.5 °F | 1.12 in. |
| March | 25.6 °F | 45.6 °F | 1.98 in. |
| April | 36.8 °F | 59.7 °F | 3.71 in. |
| May | 49.3 °F | 70.8 °F | 4.86 in. |
| June | 59.9 °F | 80.4 °F | 5.52 in. |
| July | 63.2 °F | 83.7 °F | 4.14 in. |
| August | 60.4 °F | 81.9 °F | 4.15 in. |
| September | 51.7 °F | 75.7 °F | 3.52 in. |
| October | 39.6 °F | 62.5 °F | 2.78 in. |
| November | 27.4 °F | 46.6 °F | 2.05 in. |
| December | 17.0 °F | 33.4 °F | 1.37 in. |
| Annual | 38 °F | 58.4 °F | 36.22 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |