Frost Dates for Winnipeg, Manitoba, Canada

Coordinates: 49.883, -97.167

Growing Season

The last spring air frost in Winnipeg, Manitoba, Canada typically occurs around May 10, and the first autumn air frost around Sep 12. This gives a frost-free growing season of approximately 125 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 3b, where the average annual extreme minimum temperature is -37.2 to -34.4°C (-35 to -30°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 -19°C (-2°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 10 (last spring) to Sep 12 (first autumn). Light ground frost (-1°C / 30°F): May 1 (last spring) to Sep 21 (first autumn). Hard ground frost (-2°C / 28°F): Apr 19 (last spring) to Oct 5 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 3b

... 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 10 to Sep 12, which provides approximately 124 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 1 to Sep 21, which provides a total of 143 days for growing.

Jan

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