The highest day temperature in July 2026 was 100°F. The lowest night temperature was 52°F. The average values for day and night temperatures during July were 82.6°F и 62.1°F respectivly.

The average sea surface temperature in July 2026 for Mount Desert Island was 59.0°F. The maximum and minimum values were 55.2°F and 63.0°F respectively.

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

Precipitation total in July for Mount Desert Island is 1.0 in. It makes july one of the least rainy months of the year.

The average wind speed in July is 6.7 mph. It makes July one of the most windless months of the year for Mount Desert Island.

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 Mount Desert Island in July is 7.7 hours.