Barry's Bay, Ontario climate data is summarized below. Average annual temperatures range from -0.6 °C (low) to 10.8 °C (high). Annual precipitation averages 561 Millimeters. Barry's Bay is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.63 °C | -5.24 °C | 0 mm |
| February | -15.93 °C | -4.59 °C | 0 mm |
| March | -9.26 °C | 1.93 °C | 8 mm |
| April | -1.46 °C | 10.87 °C | 53 mm |
| May | 5.03 °C | 19.02 °C | 74 mm |
| June | 10.38 °C | 23.26 °C | 71 mm |
| July | 12.68 °C | 25.5 °C | 91 mm |
| August | 11.91 °C | 24.41 °C | 86 mm |
| September | 7.14 °C | 19.86 °C | 72 mm |
| October | 2.31 °C | 12.31 °C | 72 mm |
| November | -3.74 °C | 5.27 °C | 34 mm |
| December | -11.12 °C | -2.69 °C | 0 mm |
| Annual | -0.6 °C | 10.8 °C | 561 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |