The highest day temperature in June 2026 was 58°F. The lowest night temperature was 30°F. The average values for day and night temperatures during June were 51.0°F и 40.8°F respectivly.

The average sea surface temperature in June 2026 for Juneau was 51.3°F. The maximum and minimum values were 46.0°F and 55.2°F respectively.

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

Precipitation total in June for Juneau is 2.0 in. It makes june the least rainy month of the year.

The average wind speed in June is 3.7 mph. It makes June one of the most windless months of the year for Juneau.

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 Juneau in June is 5.5 hours.