June has the longest days of the year in Idaho as the state basks in glorious sunshine. The average high temperatures are in the warm 69°F (20.6°C) to 86°F (30°C) range, while the average low temperatures are in the mild zone of 42°F (5.6°C) to 57°F (13.9°C). Bruneau in the southwest witnesses temperatures in the 54°F (12.2°C) to 86°F (30°C) range, while Twin Falls in the central region is slightly cooler between 48°F (8.9°C) to 77°F (25°C). The eastern region receives little precipitation, and the north also sees less than 3" (76mm) of rain. Tourist activity is at a high during the early part of summer, and there are many candidates for horseback riding and whitewater rafting. Shooting is a popular sport in the bright early morning skies of June. Start early for outdoor excursions to counter the hot afternoons and humidity. Summer days are the time for sweatshirts, t-shirts, and shorts, while long pants are better during the evening. Keep an eye on the weather for thunderstorms during June in Idaho.