Saybrook Manor, Connecticut has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 44.3 °F (low) to 60.7 °F (high). Annual precipitation averages 49.4 Inches. Saybrook Manor is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.0 °F | 38.9 °F | 3.67 in. |
| February | 24.8 °F | 40.4 °F | 3.31 in. |
| March | 30.6 °F | 46.8 °F | 4.59 in. |
| April | 39.6 °F | 58.3 °F | 4.67 in. |
| May | 48.4 °F | 67.7 °F | 3.75 in. |
| June | 58.2 °F | 76.2 °F | 4.31 in. |
| July | 65.0 °F | 81.9 °F | 3.41 in. |
| August | 64.5 °F | 80.4 °F | 4.19 in. |
| September | 58.3 °F | 75.3 °F | 4.35 in. |
| October | 48.4 °F | 64.5 °F | 4.6 in. |
| November | 38.7 °F | 53.7 °F | 3.99 in. |
| December | 30.5 °F | 44.3 °F | 4.53 in. |
| Annual | 44.3 °F | 60.7 °F | 49.37 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |