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Frost Dates for Loveland, Colorado, United States of America

Coordinates: 40.398, -105.074

Growing Season

The last spring air frost in Loveland, Colorado, United States of America typically occurs around May 21, and the first autumn air frost around Sep 3. This gives a frost-free growing season of approximately 105 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 6a, where the average annual extreme minimum temperature is -23.3 to -20.6°C (-10 to -5°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 -7°C (19°F). The warmest month is July, with an average high of 31°C (88°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): May 21 (last spring) to Sep 3 (first autumn). Light ground frost (-1°C / 30°F): May 10 (last spring) to Sep 13 (first autumn). Hard ground frost (-2°C / 28°F): Apr 23 (last spring) to Sep 29 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 6a

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

Current Risk Level: Light Ground Frost possible

for today based on past data only.

We predict a frost free growing season at your location from May 21 to Sep 3, which provides approximately 104 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 10 to Sep 13, which provides a total of 126 days for growing.

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