Frost Dates for Norwich, Norfolk, United Kingdom

Coordinates: 52.628, 1.301

Growing Season

The last spring air frost in Norwich, Norfolk, United Kingdom typically occurs around May 1, and the first autumn air frost around Oct 25. This gives a frost-free growing season of approximately 177 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 9a, where the average annual extreme minimum temperature is -6.7 to -3.9°C (20 to 25°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 3°C (37°F). The warmest month is August, with an average high of 21°C (70°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): May 1 (last spring) to Oct 25 (first autumn). Light ground frost (-1°C / 30°F): Apr 8 (last spring) to Nov 18 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 9a

... 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 May 1 to Oct 25, which provides approximately 176 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 8 to Nov 18, which provides a total of 224 days for growing.

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