Erin Springs, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.5 °C (low) to 23.2 °C (high). Annual precipitation averages 911.9 Millimeters. Erin Springs 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 °C | 39.88 mm |
| February | -0.6 °C | 13.4 °C | 42.42 mm |
| March | 4.2 °C | 18.4 °C | 70.61 mm |
| April | 8.7 °C | 23 °C | 90.68 mm |
| May | 14.5 °C | 27 °C | 134.11 mm |
| June | 19.4 °C | 31.7 °C | 106.43 mm |
| July | 21.6 °C | 34.7 °C | 67.06 mm |
| August | 20.7 °C | 34.9 °C | 69.6 mm |
| September | 16.4 °C | 30.2 °C | 92.2 mm |
| October | 9.6 °C | 24.2 °C | 88.65 mm |
| November | 3.5 °C | 17.6 °C | 56.64 mm |
| December | -1.4 °C | 11.8 °C | 53.59 mm |
| Annual | 9.5 °C | 23.2 °C | 911.87 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |