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Frost Dates for Charleston, South Carolina, United States of America

Coordinates: 32.776, -79.931

Growing Season

The last spring air frost in Charleston, South Carolina, United States of America typically occurs around Feb 25, and the first autumn air frost around Nov 12. This gives a frost-free growing season of approximately 261 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 January, with an average low of 7°C (45°F). The warmest month is July, with an average high of 31°C (88°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Feb 25 (last spring) to Nov 12 (first autumn). Light ground frost (-1°C / 30°F): Feb 8 (last spring) to Dec 4 (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: Unlikely (Safest)

for today based on past data only.

We predict a frost free growing season at your location from Feb 25 to Nov 12, which provides approximately 259 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 Feb 8 to Dec 4, which provides a total of 299 days for growing.

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