June begins the bright summer in North Carolina, with warm to hot temperatures. The days are long, with average high temperatures in the 55°F (12.8°C) to 88°F (31.1°C) range. Highlands has comfortable temperatures in the 55°F (12.8°C) to 77°F (25°C), while Goldsboro in the coastal belt is warm between 67°F (19.4°C) to 88°F (31.1°C). North Carolina summers are prone to thunderstorms and occasional tornadoes. Thunderstorms are frequent and severe, with heavy rainfall accompanied by lightning and thunder. The ocean waters are mild to warm and attract swimmers and surfers alike. Sunbathing is popular on the beaches in early summer. Mornings are relatively cooler than the afternoons, and the difference can be as stark as 20°F (-6.7°C). The day temperatures are high, but the nights tend to be mild. Cool and dry air from the north occasionally invades the state, but the temperatures rebound quickly to normal. Tropical cyclones hit the coastal areas and occasionally extend further inland. Fog is frequent in the summer. North Carolina sees heavy tourist footfall in June.