Cheonan (Cheonan-si, sometimes spelled Chonan or Ch'onan) (Korean pronunciation: [tɕʰʌ.nan] ) is a city located in the northeast corner of South Chungcheong, a province of South Korea, and is 83.6 km south of the capital, Seoul. The average temperature in the city is 12.5oC, with a recorded high of 34.2oC and a low of -13.4oC.