North Norwich, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.9 °C (low) to 13.7 °C (high). Annual precipitation averages 1130.3 Millimeters. North Norwich 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 | -10.7 °C | -0.4 °C | 73.66 mm |
| February | -10 °C | 0.9 °C | 65.79 mm |
| March | -6.2 °C | 5.4 °C | 85.34 mm |
| April | 0.2 °C | 13.1 °C | 95.5 mm |
| May | 6.4 °C | 20.2 °C | 96.01 mm |
| June | 11.5 °C | 24.5 °C | 120.9 mm |
| July | 14 °C | 26.8 °C | 113.03 mm |
| August | 13.2 °C | 26.1 °C | 108.2 mm |
| September | 9.3 °C | 22.4 °C | 99.57 mm |
| October | 3.6 °C | 15.3 °C | 102.87 mm |
| November | -1.7 °C | 8.3 °C | 84.33 mm |
| December | -6.3 °C | 2.2 °C | 85.09 mm |
| Annual | 1.9 °C | 13.7 °C | 1130.29 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |