Norway, Maine has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from 1.7 °C (low) to 12.8 °C (high). Annual precipitation averages 1230.9 Millimeters. Norway 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 | -12.6 °C | -1.9 °C | 85.09 mm |
| February | -11.7 °C | -0.2 °C | 81.03 mm |
| March | -6.2 °C | 4.7 °C | 94.23 mm |
| April | 0.3 °C | 11.8 °C | 106.17 mm |
| May | 6.4 °C | 18.7 °C | 94.49 mm |
| June | 11.9 °C | 23.3 °C | 121.92 mm |
| July | 15 °C | 26.5 °C | 102.36 mm |
| August | 14.1 °C | 25.9 °C | 99.57 mm |
| September | 9.7 °C | 21.7 °C | 91.95 mm |
| October | 3.4 °C | 14.4 °C | 137.67 mm |
| November | -2.1 °C | 7.5 °C | 106.68 mm |
| December | -7.9 °C | 1.4 °C | 109.73 mm |
| Annual | 1.7 °C | 12.8 °C | 1230.89 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 | Dfc - Subarctic With Cool Summers And Year Around Rainfall |