Dryden, Ontario climate data is summarized below. Average annual temperatures range from -2 °C (low) to 7.5 °C (high). Annual precipitation averages 553 Millimeters. Dryden is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -20.49 °C | -11.59 °C | 0 mm |
| February | -19.66 °C | -9.16 °C | 0 mm |
| March | -10.64 °C | 0.02 °C | 0 mm |
| April | -2.73 °C | 7.95 °C | 24 mm |
| May | 4.42 °C | 15.88 °C | 89 mm |
| June | 11.01 °C | 21.41 °C | 114 mm |
| July | 13.76 °C | 23.95 °C | 127 mm |
| August | 13.04 °C | 23.19 °C | 79 mm |
| September | 8.41 °C | 17.84 °C | 62 mm |
| October | 2.14 °C | 9.66 °C | 58 mm |
| November | -5.87 °C | 0.44 °C | 0 mm |
| December | -17.14 °C | -9.81 °C | 0 mm |
| Annual | -2 °C | 7.5 °C | 553 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |