Dryden, Ontario climate data is summarized below. Average annual temperatures range from 28.4 °F (low) to 45.5 °F (high). Annual precipitation averages 21.8 Inches. 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 | -29.2 °F | -24.2 °F | 0 in. |
| February | -28.7 °F | -22.9 °F | 0 in. |
| March | -23.7 °F | -17.8 °F | 0 in. |
| April | -19.3 °F | -13.4 °F | 609.6 in. |
| May | -15.3 °F | -9 °F | 2260.6 in. |
| June | -11.7 °F | -5.9 °F | 2895.6 in. |
| July | -10.1 °F | -4.5 °F | 3225.8 in. |
| August | -10.5 °F | -4.9 °F | 2006.6 in. |
| September | -13.1 °F | -7.9 °F | 1574.8 in. |
| October | -16.6 °F | -12.4 °F | 1473.2 in. |
| November | -21 °F | -17.5 °F | 0 in. |
| December | -27.3 °F | -23.2 °F | 0 in. |
| Annual | 28.4 °F | 45.5 °F | 21.76 in. |
| 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 : -35°F to -30°F |
| Current Drought Conditions | Normal |