Morris, Connecticut has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.3 °F (low) to 57.9 °F (high). Annual precipitation averages 52 Inches. Morris is located in USDA Plant Hardiness Zone 6a. 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 | 15.8 °F | 33.6 °F | 3.52 in. |
| February | 17.5 °F | 36.4 °F | 3.06 in. |
| March | 24.7 °F | 44.3 °F | 4.31 in. |
| April | 35.3 °F | 57.3 °F | 3.93 in. |
| May | 45.9 °F | 68.0 °F | 4.16 in. |
| June | 55.1 °F | 76.1 °F | 4.67 in. |
| July | 60.4 °F | 80.8 °F | 4.77 in. |
| August | 59.2 °F | 79.1 °F | 4.87 in. |
| September | 52.1 °F | 71.9 °F | 4.79 in. |
| October | 40.6 °F | 60.2 °F | 5.38 in. |
| November | 31.0 °F | 49.2 °F | 3.97 in. |
| December | 22.0 °F | 38.2 °F | 4.57 in. |
| Annual | 38.3 °F | 57.9 °F | 52 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |