Santee, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.8 °F (low) to 59.7 °F (high). Annual precipitation averages 26.2 Inches. Santee 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.6 °F | 29.7 °F | 0.55 in. |
| February | 13.2 °F | 34.7 °F | 0.77 in. |
| March | 24.0 °F | 46.7 °F | 1.37 in. |
| April | 35.4 °F | 59.9 °F | 2.98 in. |
| May | 47.5 °F | 71.4 °F | 3.92 in. |
| June | 58.6 °F | 81.8 °F | 3.72 in. |
| July | 63.5 °F | 86.9 °F | 3.01 in. |
| August | 61.1 °F | 84.7 °F | 3.19 in. |
| September | 51.6 °F | 77.4 °F | 2.66 in. |
| October | 38.0 °F | 63.1 °F | 2.31 in. |
| November | 25.0 °F | 46.9 °F | 1.01 in. |
| December | 14.5 °F | 33.7 °F | 0.74 in. |
| Annual | 36.8 °F | 59.7 °F | 26.23 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |