Brigham City, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.5 °F (low) to 61.6 °F (high). Annual precipitation averages 18.2 Inches. Brigham City is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.8 °F | 34.9 °F | 2.12 in. |
| February | 21.6 °F | 40.0 °F | 1.68 in. |
| March | 30.2 °F | 51.4 °F | 1.82 in. |
| April | 36.0 °F | 59.5 °F | 2.0 in. |
| May | 44.0 °F | 69.1 °F | 2.52 in. |
| June | 51.2 °F | 80.2 °F | 1.24 in. |
| July | 59.3 °F | 90.2 °F | 0.35 in. |
| August | 57.5 °F | 88.6 °F | 0.6 in. |
| September | 48.3 °F | 77.9 °F | 1.23 in. |
| October | 37.0 °F | 63.4 °F | 1.6 in. |
| November | 27.5 °F | 48.0 °F | 1.29 in. |
| December | 19.4 °F | 35.9 °F | 1.7 in. |
| Annual | 37.5 °F | 61.6 °F | 18.15 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |