Spanish Fork, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.8 °C (low) to 18.1 °C (high). Annual precipitation averages 420.4 Millimeters. Spanish Fork is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.5 °C | 3.3 °C | 40.13 mm |
| February | -4.2 °C | 6.9 °C | 36.32 mm |
| March | -0.2 °C | 12.9 °C | 34.54 mm |
| April | 2.8 °C | 17.1 °C | 46.48 mm |
| May | 6.9 °C | 22.5 °C | 52.83 mm |
| June | 10.9 °C | 28.9 °C | 18.29 mm |
| July | 15.5 °C | 33.5 °C | 14.73 mm |
| August | 14.9 °C | 32.4 °C | 17.78 mm |
| September | 9.7 °C | 26.9 °C | 37.34 mm |
| October | 3.5 °C | 18.9 °C | 47.5 mm |
| November | -1.5 °C | 10.3 °C | 37.08 mm |
| December | -5.8 °C | 3.6 °C | 37.34 mm |
| Annual | 3.8 °C | 18.1 °C | 420.36 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |