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Frost Dates for Corvallis, Oregon, United States of America

Coordinates: 44.565, -123.261

Growing Season

The last spring air frost in Corvallis, Oregon, United States of America typically occurs around Jun 12, and the first autumn air frost around Sep 16. This gives a frost-free growing season of approximately 96 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 8a, where the average annual extreme minimum temperature is -12.2 to -9.4°C (10 to 15°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 28°C (82°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Jun 12 (last spring) to Sep 16 (first autumn). Light ground frost (-1°C / 30°F): May 15 (last spring) to Oct 6 (first autumn). Hard ground frost (-2°C / 28°F): Apr 6 (last spring) to Nov 13 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 8a

... 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 Jun 12 to Sep 16, which provides approximately 95 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 May 15 to Oct 6, which provides a total of 144 days for growing.

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