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Frost Dates for Columbus, Ohio, United States of America

Coordinates: 39.961, -82.999

Growing Season

The last spring air frost in Columbus, Ohio, United States of America typically occurs around Apr 21, and the first autumn air frost around Sep 25. This gives a frost-free growing season of approximately 157 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 6a, where the average annual extreme minimum temperature is -23.3 to -20.6°C (-10 to -5°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 -6°C (21°F). The warmest month is July, with an average high of 29°C (84°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Apr 21 (last spring) to Sep 25 (first autumn). Light ground frost (-1°C / 30°F): Apr 11 (last spring) to Oct 4 (first autumn). Hard ground frost (-2°C / 28°F): Mar 26 (last spring) to Oct 18 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 6a

... 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 Apr 21 to Sep 25, which provides approximately 156 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 11 to Oct 4, which provides a total of 176 days for growing.

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