The tropical savannah zone of Northern Australia is warm to hot all year. Summers are hot in most of the country with average January maximum temperatures exceeding 30 °C over most of the mainland, except for high elevations. Winters are warm in the north and cool in the south, with nightly frosts common in inland areas south of the Tropic of Capricorn. Only at the highly elevated areas do wintertime temperatures approach those found in much of Europe or North America, especially the southern parts.