The highest day temperature in July 2026 was 103°F. The lowest night temperature was 57°F. The average values for day and night temperatures during July were 86.0°F и 68.5°F respectivly.

The average sea surface temperature in July 2026 for Stonington was 69.5°F. The maximum and minimum values were 67.6°F and 72.8°F respectively.

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

Precipitation total in July for Stonington is 1.2 in. It makes july one of the most rainy months of the year.

The average wind speed in July is 7.4 mph. It makes July one of the most windless months of the year for Stonington.

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 Stonington in July is 8.3 hours.