North Blenheim, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.8 °F (low) to 58.1 °F (high). Annual precipitation averages 39.3 Inches. North Blenheim is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.1 °F | 32.6 °F | 2.42 in. |
| February | 15.6 °F | 35.3 °F | 2.05 in. |
| March | 22.9 °F | 43.2 °F | 2.79 in. |
| April | 34.1 °F | 57.3 °F | 3.3 in. |
| May | 45.0 °F | 69.4 °F | 3.53 in. |
| June | 54.2 °F | 77.4 °F | 4.33 in. |
| July | 58.8 °F | 81.8 °F | 4.3 in. |
| August | 57.3 °F | 80.2 °F | 3.84 in. |
| September | 49.8 °F | 73.4 °F | 3.59 in. |
| October | 38.9 °F | 60.8 °F | 3.69 in. |
| November | 29.7 °F | 48.3 °F | 2.64 in. |
| December | 21.6 °F | 37.4 °F | 2.78 in. |
| Annual | 36.8 °F | 58.1 °F | 39.26 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |