Peoria, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.3 °C (low) to 20.6 °C (high). Annual precipitation averages 1193.3 Millimeters. Peoria is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.1 °C | 7.5 °C | 53.34 mm |
| February | -2.3 °C | 10.1 °C | 54.61 mm |
| March | 2.6 °C | 15.4 °C | 90.17 mm |
| April | 7.7 °C | 20.7 °C | 124.71 mm |
| May | 13.3 °C | 24.9 °C | 176.28 mm |
| June | 18.4 °C | 29.7 °C | 131.57 mm |
| July | 20.6 °C | 32.4 °C | 100.58 mm |
| August | 19.6 °C | 32.3 °C | 90.42 mm |
| September | 15.1 °C | 28.1 °C | 120.65 mm |
| October | 8.4 °C | 21.8 °C | 100.08 mm |
| November | 2.5 °C | 15.1 °C | 85.34 mm |
| December | -2.2 °C | 9.2 °C | 65.53 mm |
| Annual | 8.3 °C | 20.6 °C | 1193.28 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |