Oona River, British Columbia climate data is summarized below. Average annual temperatures range from 40.9 °F (low) to 49.5 °F (high). Annual precipitation averages 99.5 Inches. 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 | -17.4 °F | -15.3 °F | 7391.4 in. |
| February | -17.4 °F | -15 °F | 5715 in. |
| March | -17 °F | -14.4 °F | 5994.4 in. |
| April | -16 °F | -12.9 °F | 4521.2 in. |
| May | -14.5 °F | -11.2 °F | 2870.2 in. |
| June | -13.1 °F | -10 °F | 2667 in. |
| July | -11.9 °F | -8.9 °F | 2133.6 in. |
| August | -11.8 °F | -8.6 °F | 3454.4 in. |
| September | -12.9 °F | -10 °F | 5994.4 in. |
| October | -14.4 °F | -12 °F | 9220.2 in. |
| November | -16.5 °F | -14.4 °F | 7518.4 in. |
| December | -17.9 °F | -15.8 °F | 6731 in. |
| Annual | 40.9 °F | 49.5 °F | 99.52 in. |
| 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 : 10°F to 15°F |
| Current Drought Conditions | Normal |