Frost Dates for Glasgow, Glasgow City, United Kingdom

Coordinates: 55.862, -4.247

Growing Season

The last spring air frost in Glasgow, Glasgow City, United Kingdom typically occurs around May 25, and the first autumn air frost around Sep 22. This gives a frost-free growing season of approximately 120 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 1°C (34°F). The warmest month is July, with an average high of 18°C (64°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): May 25 (last spring) to Sep 22 (first autumn). Light ground frost (-1°C / 30°F): May 7 (last spring) to Oct 12 (first autumn). Hard ground frost (-2°C / 28°F): Apr 9 (last spring) to Nov 12 (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: Hard Ground Frost possible

for today based on past data only.

We predict a frost free growing season at your location from May 25 to Sep 22, which provides approximately 119 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 7 to Oct 12, which provides a total of 158 days for growing.

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