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Frost Dates for Roseville, California, United States of America

Coordinates: 38.752, -121.287

Growing Season

The last spring air frost in Roseville, California, United States of America typically occurs around Apr 23, and the first autumn air frost around Oct 17. 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 5°C (41°F). The warmest month is July, with an average high of 36°C (97°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Apr 23 (last spring) to Oct 17 (first autumn). Light ground frost (-1°C / 30°F): Mar 26 (last spring) to Nov 5 (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 Apr 23 to Oct 17, 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 Mar 26 to Nov 5, which provides a total of 224 days for growing.

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