The highest day temperature in June 2026 was 100°F. The lowest night temperature was 54°F. The average values for day and night temperatures during June were 86.5°F и 66.9°F respectivly.

You can expect various weather conditions during June. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in June for Charleston is 1.0 in. It makes june one of the least rainy months of the year.

The average wind speed in June is 4.8 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 Charleston in June is 8.7 hours.