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Frost Dates for Kent, Washington, United States of America

Coordinates: 47.381, -122.234

Growing Season

The last spring air frost in Kent, Washington, United States of America typically occurs around May 15, and the first autumn air frost around Sep 29. This gives a frost-free growing season of approximately 137 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 8b, where the average annual extreme minimum temperature is -9.4 to -6.7°C (15 to 20°F). This zone rating helps gardeners determine which perennial plants are likely to survive winter.

Temperature Overview

The coldest month is February, with an average low of 2°C (36°F). The warmest month is August, with an average high of 25°C (77°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): May 15 (last spring) to Sep 29 (first autumn). Light ground frost (-1°C / 30°F): Apr 24 (last spring) to Oct 17 (first autumn). Hard ground frost (-2°C / 28°F): Mar 9 (last spring) to Nov 21 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 8b

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

Current Risk Level: Light Ground Frost possible

for today based on past data only.

We predict a frost free growing season at your location from May 15 to Sep 29, which provides approximately 136 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 24 to Oct 17, which provides a total of 176 days for growing.

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