Norridgewock, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.6 °F (low) to 54.7 °F (high). Annual precipitation averages 43.9 Inches. 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 | 7.0 °F | 27.9 °F | 3.11 in. |
| February | 8.0 °F | 31.0 °F | 2.58 in. |
| March | 18.9 °F | 39.9 °F | 3.18 in. |
| April | 31.3 °F | 52.4 °F | 3.76 in. |
| May | 42.5 °F | 64.9 °F | 3.41 in. |
| June | 52.4 °F | 73.9 °F | 4.38 in. |
| July | 58.1 °F | 79.5 °F | 3.73 in. |
| August | 56.3 °F | 78.6 °F | 3.49 in. |
| September | 48.2 °F | 71.1 °F | 3.48 in. |
| October | 37.3 °F | 57.9 °F | 4.96 in. |
| November | 27.5 °F | 45.3 °F | 3.94 in. |
| December | 16.0 °F | 34.0 °F | 3.85 in. |
| Annual | 33.6 °F | 54.7 °F | 43.87 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |