Frost Dates for Bern, Switzerland

Coordinates: 46.917, 7.467

Growing Season

The last spring air frost in Bern, Switzerland typically occurs around May 27, and the first autumn air frost around Aug 29. This gives a frost-free growing season of approximately 94 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 6b, where the average annual extreme minimum temperature is -20.6 to -17.8°C (-5 to 0°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 -4°C (25°F). The warmest month is July, with an average high of 24°C (75°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): May 27 (last spring) to Aug 29 (first autumn). Light ground frost (-1°C / 30°F): May 15 (last spring) to Sep 13 (first autumn). Hard ground frost (-2°C / 28°F): Apr 25 (last spring) to Oct 8 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 6b

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

Current Risk Level: Hard Ground Frost possible

for today based on past data only.

We predict a frost free growing season at your location from May 27 to Aug 29, which provides approximately 93 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 Sep 13, which provides a total of 121 days for growing.

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