Frederick, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.1 °C (low) to 24.2 °C (high). Annual precipitation averages 717.8 Millimeters. Frederick 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 | -2.1 °C | 11.9 °C | 27.94 mm |
| February | -0.2 °C | 14 °C | 33.78 mm |
| March | 4.4 °C | 19.2 °C | 55.37 mm |
| April | 8.8 °C | 23.9 °C | 74.17 mm |
| May | 15.1 °C | 28.8 °C | 100.58 mm |
| June | 20.3 °C | 33.7 °C | 85.6 mm |
| July | 22.3 °C | 36 °C | 59.18 mm |
| August | 21.7 °C | 35.7 °C | 60.71 mm |
| September | 17.4 °C | 31.2 °C | 70.61 mm |
| October | 10.6 °C | 25.1 °C | 75.18 mm |
| November | 4 °C | 18.1 °C | 38.86 mm |
| December | -1.1 °C | 12.3 °C | 35.81 mm |
| Annual | 10.1 °C | 24.2 °C | 717.79 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |