The absolute minimum is −13.3 °C (8.1 °F), recorded during February 1969.[36] In a typical year the coldest night should fall to −6.8 °C (19.8 °F),[37] and 40.2 nights[38] should receive an air frost. The lowest temperature in recent years was −9.2 °C (15.4 °F)[39] during December 2010.