Oona River, British Columbia climate data is summarized below. Average annual temperatures range from 4.9 °C (low) to 9.8 °C (high). Annual precipitation averages 2528 Millimeters. Oona River is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.72 °C | 4.48 °C | 291 mm |
| February | 0.71 °C | 4.97 °C | 225 mm |
| March | 1.37 °C | 6.09 °C | 236 mm |
| April | 3.29 °C | 8.86 °C | 178 mm |
| May | 5.99 °C | 11.89 °C | 113 mm |
| June | 8.5 °C | 14.02 °C | 105 mm |
| July | 10.64 °C | 16.04 °C | 84 mm |
| August | 10.72 °C | 16.55 °C | 136 mm |
| September | 8.86 °C | 13.97 °C | 236 mm |
| October | 6.16 °C | 10.38 °C | 363 mm |
| November | 2.28 °C | 6.11 °C | 296 mm |
| December | -0.24 °C | 3.48 °C | 265 mm |
| Annual | 4.9 °C | 9.8 °C | 2528 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |