The highest day temperature in June 2025 was 95°F. The lowest night temperature was 33°F. The average values for day and night temperatures during June were 75.9°F и 48.1°F respectivly.

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

Precipitation total in June for Great Falls is 1.4 in. It makes june one of the most rainy months of the year.

The average wind speed in June is 8.0 mph. This value is relatively stable throughout the year.

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 Great Falls in June is 10.5 hours.