Cedar Falls, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.6 °F (low) to 57.6 °F (high). Annual precipitation averages 37.3 Inches. Cedar Falls 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.4 °F | 26.4 °F | 1.04 in. |
| February | 13.6 °F | 30.9 °F | 1.13 in. |
| March | 25.0 °F | 44.3 °F | 1.98 in. |
| April | 36.7 °F | 58.7 °F | 4.04 in. |
| May | 49.3 °F | 70.4 °F | 4.8 in. |
| June | 60.0 °F | 80.3 °F | 5.69 in. |
| July | 63.1 °F | 83.2 °F | 4.5 in. |
| August | 60.2 °F | 81.2 °F | 4.06 in. |
| September | 51.4 °F | 75.3 °F | 3.46 in. |
| October | 39.1 °F | 61.8 °F | 2.98 in. |
| November | 26.8 °F | 45.8 °F | 1.97 in. |
| December | 16.3 °F | 32.5 °F | 1.6 in. |
| Annual | 37.6 °F | 57.6 °F | 37.25 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 |