Brighton, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 1.4 °C (low) to 6.4 °C (high). Annual precipitation averages 794 Millimeters. Brighton is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.05 °C | -3.1 °C | 18 mm |
| February | -8.43 °C | -3.42 °C | 21 mm |
| March | -6.74 °C | -1.94 °C | 19 mm |
| April | -2.44 °C | 1.74 °C | 48 mm |
| May | 1.56 °C | 6.65 °C | 75 mm |
| June | 6.62 °C | 12.16 °C | 77 mm |
| July | 11.75 °C | 17.85 °C | 88 mm |
| August | 12.73 °C | 18.49 °C | 101 mm |
| September | 9.31 °C | 14.91 °C | 107 mm |
| October | 5.02 °C | 9.34 °C | 105 mm |
| November | 0.28 °C | 4.38 °C | 83 mm |
| December | -4.5 °C | -0.37 °C | 52 mm |
| Annual | 1.4 °C | 6.4 °C | 794 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |