Richfield, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.7 °F (low) to 61.3 °F (high). Annual precipitation averages 32.6 Inches. Richfield is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.4 °F | 32.4 °F | 0.86 in. |
| February | 18.1 °F | 37.2 °F | 1.09 in. |
| March | 28.5 °F | 49.9 °F | 1.85 in. |
| April | 39.5 °F | 62.5 °F | 3.34 in. |
| May | 51.4 °F | 72.2 °F | 4.82 in. |
| June | 62.1 °F | 82.6 °F | 5.03 in. |
| July | 66.2 °F | 86.0 °F | 3.28 in. |
| August | 63.8 °F | 84.1 °F | 3.94 in. |
| September | 54.3 °F | 77.8 °F | 3.03 in. |
| October | 41.9 °F | 64.7 °F | 2.58 in. |
| November | 29.2 °F | 49.4 °F | 1.5 in. |
| December | 19.3 °F | 36.7 °F | 1.27 in. |
| Annual | 40.7 °F | 61.3 °F | 32.59 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |