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Frost Dates for Appleton, Wisconsin, United States of America

Coordinates: 44.262, -88.415

Growing Season

The last spring air frost in Appleton, Wisconsin, United States of America typically occurs around May 5, and the first autumn air frost around Sep 18. This gives a frost-free growing season of approximately 136 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 5b, where the average annual extreme minimum temperature is -26.1 to -23.3°C (-15 to -10°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 -11°C (12°F). The warmest month is July, with an average high of 26°C (79°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): May 5 (last spring) to Sep 18 (first autumn). Light ground frost (-1°C / 30°F): Apr 26 (last spring) to Sep 28 (first autumn). Hard ground frost (-2°C / 28°F): Apr 10 (last spring) to Oct 15 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 5b

... 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 5 to Sep 18, which provides approximately 135 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 26 to Sep 28, which provides a total of 155 days for growing.

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