frostdates.com

Turbo charge your gardening, homesteading and horticultural powers with our international frost date and growing zone calculator

Frost Dates for Trenton, New Jersey, United States of America

Coordinates: 40.217, -74.743

Growing Season

The last spring air frost in Trenton, New Jersey, United States of America typically occurs around Apr 22, and the first autumn air frost around Oct 1. This gives a frost-free growing season of approximately 162 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 6b, where the average annual extreme minimum temperature is -20.6 to -17.8°C (-5 to 0°F). This zone rating helps gardeners determine which perennial plants are likely to survive winter.

Temperature Overview

The coldest month is January, with an average low of -4°C (25°F). The warmest month is July, with an average high of 30°C (86°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Apr 22 (last spring) to Oct 1 (first autumn). Light ground frost (-1°C / 30°F): Apr 12 (last spring) to Oct 10 (first autumn). Hard ground frost (-2°C / 28°F): Mar 26 (last spring) to Oct 25 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 6b

... and the frost data for your area is ...

Current Risk Level: Air Frost possible

for today based on past data only.

We predict a frost free growing season at your location from Apr 22 to Oct 1, which provides approximately 161 frost free days.

For the less tender plants, or if you are planning to protect your plants with fleece etc, your growing season could stretch from Apr 12 to Oct 10, which provides a total of 181 days for growing.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec