Geographically, South Carolina ranges from the barrier islands and pine forests of the coastal Lowcountry to the foothills of the Appalachian mountains in the Upstate. Expect temperatures in the 90s and above across the state during summer. In the winter, the subtropical climate of Charleston and Hilton Head brings mild, sunny winters that rarely reach freezing temperatures, even at night. Greenville experiences a full range of seasons, including a striking, fiery-toned autumn. In Charleston, tourism peaks in the spring, thanks to pleasant weather and events like the Southeastern Wildlife Exposition, Charleston Wine + Food, and Spoleto, a three-week celebration of the arts held each May and June. Retreats like Lakes Keowee and Jocassee in the Upstate are busiest during the summer months.