The highest day temperature in June 2025 was 84°F. The lowest night temperature was 48°F. The average values for day and night temperatures during June were 69.2°F и 56.6°F respectivly.

Most of the days in June are sunny but you can also expect cloudy and gloomy days.

Precipitation total in June for Sumy is 2.7 in. It makes june the most rainy month of the year.

The average wind speed in June is 7.6 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Sumy in June is 10.1 hours.