The highest day temperature in June 2026 was 85°F. The lowest night temperature was 47°F. The average values for day and night temperatures during June were 73.9°F и 63.5°F respectivly.

The average sea surface temperature in June 2026 for Siasconset was 60.7°F. The maximum and minimum values were 52.6°F and 67.6°F respectively.

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

Precipitation total in June for Siasconset is 0.6 in. It makes june the least rainy month of the year.

The average wind speed in June is 13.8 mph. It makes June one of the most windless months of the year for Siasconset.

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 Siasconset in June is 8.9 hours.