Cairo, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.9 °F (low) to 62.2 °F (high). Annual precipitation averages 27.5 Inches. Cairo is located in USDA Plant Hardiness Zone 5b. 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 | 14.7 °F | 35.5 °F | 0.57 in. |
| February | 17.8 °F | 39.2 °F | 0.7 in. |
| March | 27.2 °F | 51.2 °F | 1.5 in. |
| April | 37.4 °F | 61.8 °F | 2.85 in. |
| May | 48.7 °F | 72.1 °F | 4.56 in. |
| June | 59.5 °F | 82.5 °F | 4.1 in. |
| July | 64.2 °F | 86.8 °F | 3.44 in. |
| August | 61.9 °F | 84.6 °F | 3.41 in. |
| September | 52.4 °F | 78.1 °F | 2.29 in. |
| October | 39.2 °F | 65.3 °F | 2.08 in. |
| November | 26.6 °F | 50.8 °F | 1.14 in. |
| December | 17.4 °F | 38.4 °F | 0.85 in. |
| Annual | 38.9 °F | 62.2 °F | 27.49 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 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |