The highest day temperature in June 2026 was 100°F. The lowest night temperature was 47°F. The average values for day and night temperatures during June were 84.0°F и 63.9°F respectivly.

The average sea surface temperature in June 2026 for Boston was 63.7°F. The maximum and minimum values were 56.8°F and 67.2°F respectively.

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

Precipitation total in June for Boston is 2.3 in.

The average wind speed in June is 8.2 mph. It makes June one of the most windless months of the year for Boston.

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 Boston in June is 9.1 hours.