Norridgewock, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.9 °C (low) to 12.6 °C (high). Annual precipitation averages 1114.3 Millimeters. Norridgewock is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.9 °C | -2.3 °C | 78.99 mm |
| February | -13.3 °C | -0.6 °C | 65.53 mm |
| March | -7.3 °C | 4.4 °C | 80.77 mm |
| April | -0.4 °C | 11.3 °C | 95.5 mm |
| May | 5.8 °C | 18.3 °C | 86.61 mm |
| June | 11.3 °C | 23.3 °C | 111.25 mm |
| July | 14.5 °C | 26.4 °C | 94.74 mm |
| August | 13.5 °C | 25.9 °C | 88.65 mm |
| September | 9 °C | 21.7 °C | 88.39 mm |
| October | 2.9 °C | 14.4 °C | 125.98 mm |
| November | -2.5 °C | 7.4 °C | 100.08 mm |
| December | -8.9 °C | 1.1 °C | 97.79 mm |
| Annual | 0.9 °C | 12.6 °C | 1114.28 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |