Liverpool experiences a temperate maritime climate (Köppen: Cfb), like much of the British Isles, with relatively mild summers and cool winters. More recently, the Met Office has operated a weather station at Crosby. Although Liverpool has a mild climate for its northerly latitude, it is far cooler than the London area during summer days, both as a result of being farther north and due to being exposed to maritime air from its west. The highest temperature recorded at the Bidston Observatory was 34.5 °C (94.1 °F), recorded on 3 August 1990, whilst the highest temperature recorded at Crosby was 34.3 °C (93.7 °F), recorded on 19 July 2006. For the period of 1971-2000, the warmest day of the year should reach an average of 27.6 °C (81.7 °F).
The coldest temperature recorded at the Bidston Observatory was −12.8 °C (9.0 °F), recorded in January 1881, whilst the lowest recorded temperature at Crosby was −17.6 °C (0.3 °F), recorded on 21 December 2010. On average, Crosby records 32.8 days of air frost, and for the period of 1971-2000, the coldest temperature of the year should fall down to −4.0 °C (24.8 °F) at the Bidston Observatory.