Friendship, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.7 °C (low) to 23.8 °C (high). Annual precipitation averages 715.8 Millimeters. Friendship is located in USDA Plant Hardiness Zone 7b. 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 | -2.7 °C | 11.6 °C | 25.4 mm |
| February | -0.7 °C | 13.7 °C | 30.48 mm |
| March | 3.9 °C | 19 °C | 49.53 mm |
| April | 8.3 °C | 23.6 °C | 72.14 mm |
| May | 14.7 °C | 28.6 °C | 107.7 mm |
| June | 20.1 °C | 33.4 °C | 93.98 mm |
| July | 22.1 °C | 35.8 °C | 60.2 mm |
| August | 21.3 °C | 35.2 °C | 70.1 mm |
| September | 17.1 °C | 30.7 °C | 67.82 mm |
| October | 10.1 °C | 24.8 °C | 67.82 mm |
| November | 3.4 °C | 17.7 °C | 37.59 mm |
| December | -1.6 °C | 11.9 °C | 33.02 mm |
| Annual | 9.7 °C | 23.8 °C | 715.78 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 7b : -15°C to -12.2°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 |