Frost Dates for Sumy, Sums'ka Oblast', Ukraine

Coordinates: 50.920, 34.782

Growing Season

The last spring air frost in Sumy, Sums'ka Oblast', Ukraine typically occurs around Apr 28, and the first autumn air frost around Sep 10. This gives a frost-free growing season of approximately 135 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 6b, where the average annual extreme minimum temperature is -20.6 to -17.8°C (-5 to 0°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 26°C (79°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Apr 28 (last spring) to Sep 10 (first autumn). Light ground frost (-1°C / 30°F): Apr 17 (last spring) to Sep 23 (first autumn). Hard ground frost (-2°C / 28°F): Mar 29 (last spring) to Oct 19 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 6b

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

Current Risk Level: Unlikely (Safest)

for today based on past data only.

We predict a frost free growing season at your location from Apr 28 to Sep 10, which provides approximately 134 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 17 to Sep 23, which provides a total of 159 days for growing.

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