Norwood, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.3 °C (low) to 15.9 °C (high). Annual precipitation averages 352.3 Millimeters. Norwood 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 | -10.1 °C | 3.4 °C | 20.57 mm |
| February | -7.8 °C | 5.8 °C | 23.62 mm |
| March | -4.2 °C | 10.7 °C | 22.86 mm |
| April | -1.3 °C | 14.6 °C | 25.91 mm |
| May | 3.2 °C | 20.1 °C | 30.99 mm |
| June | 8.1 °C | 26.4 °C | 13.46 mm |
| July | 11.3 °C | 28.9 °C | 27.69 mm |
| August | 11.1 °C | 27.3 °C | 52.58 mm |
| September | 7 °C | 23.5 °C | 49.02 mm |
| October | 0.8 °C | 16.6 °C | 27.94 mm |
| November | -4.9 °C | 9.6 °C | 29.72 mm |
| December | -9.6 °C | 3.3 °C | 27.94 mm |
| Annual | 0.3 °C | 15.9 °C | 352.3 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |