Hugo, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.8 °C (low) to 23.6 °C (high). Annual precipitation averages 1205.5 Millimeters. Hugo is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.6 °C | 11.9 °C | 76.45 mm |
| February | 1.6 °C | 14.5 °C | 79.76 mm |
| March | 5.7 °C | 18.8 °C | 105.92 mm |
| April | 10 °C | 23.3 °C | 109.98 mm |
| May | 15.4 °C | 27.2 °C | 147.57 mm |
| June | 20.1 °C | 31.6 °C | 108.2 mm |
| July | 21.9 °C | 34.3 °C | 82.3 mm |
| August | 21.2 °C | 34.7 °C | 75.18 mm |
| September | 17.3 °C | 30.9 °C | 97.54 mm |
| October | 10.8 °C | 24.9 °C | 116.08 mm |
| November | 5.2 °C | 18.3 °C | 102.62 mm |
| December | 0.8 °C | 13.1 °C | 103.89 mm |
| Annual | 10.8 °C | 23.6 °C | 1205.49 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |