Saginaw, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13 °C (low) to 25 °C (high). Annual precipitation averages 935.7 Millimeters. Saginaw is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.7 °C | 13.9 °C | 57.15 mm |
| February | 3.6 °C | 15.9 °C | 64.77 mm |
| March | 8 °C | 20.4 °C | 84.84 mm |
| April | 12.2 °C | 24.7 °C | 79.25 mm |
| May | 17.5 °C | 28.7 °C | 109.47 mm |
| June | 21.8 °C | 33.1 °C | 100.84 mm |
| July | 23.8 °C | 35.5 °C | 55.88 mm |
| August | 23.7 °C | 35.8 °C | 61.47 mm |
| September | 19.6 °C | 31.8 °C | 78.23 mm |
| October | 13.4 °C | 26.1 °C | 105.16 mm |
| November | 7.6 °C | 19.6 °C | 71.12 mm |
| December | 2.8 °C | 14.7 °C | 67.56 mm |
| Annual | 13 °C | 25 °C | 935.74 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |