southeast of the Big Thicket. The other large lakes in the region were constructed in the decades following the Second World War, including B.A. Steinhagen Lake (1947–53) and Sam Rayburn Reservoir (1956–65) on the Neches River drainage, Lake Livingston (1966–69) on the Trinity River, Lake Houston (1953) and Lake Conroe (1970–73) on the San Jacinto River. Climate: The proximity to the Gulf of Mexico gives the region a climate of mild winters, hot summers, and high humidity most of the year. Average precipitation is a year, with northern areas receiving about , and southern areas receiving about . However, tropical storms and hurricanes can increase annual rainfall to over . Humidity stays well above 60% most of the time and exceeds 90% often. Winters are mild, with nighttime lows averaging and daytime highs . Winter cold fronts can drop temperatures to freezing, but freezes rarely last for more than a few days, sometimes only hours, averaging about 20 mostly nonconsecutive days each year. Snow is rare, occurring only once every ten years or so. Summer temperatures are hot, with nighttime lows averaging and daytime highs averaging . Temperatures exceed about 110 days each year and days with temperatures above and even above are not uncommon. The high summer temperatures with high humidity levels can produce very high heat index numbers. Human geography Population: In 2010, the United States Census Bureau reported a population of 54,635 for Hardin County, with an average of in a county of . The larger towns (and populations from 2010 census) in Hardin County are Kountze, the county seat (2,123), Lumberton (12,448), Silsbee (6,611), and Sour Lake (1,813). Smaller unincorporated communities in the Hardin County include Batson, Honey Island, Saratoga, Thicket, Village Mills, and Votaw. Tyler County had a total population of 21,766, with an average population of in . The larger towns in Tyler County are Chester (312), Colmesneil (596), Warren (757), and Woodville, the county seat (2,586) with smaller unincorporated communities including Doucette, Fred, Rockland, and Spurger. Polk County had a total population of 45,413, with an average of in an area of in 2010 including Livingston (5,335), the county seat and the largest town in the county. Larger towns and cities in the greater region include Beaumont, Jefferson County, located at the southeast corner of the Big Thicket area with a population of 118,296 and Liberty, Liberty County (8,397), on the southern edge