Liverpool experiences a temperate maritime climate , like much of the British Isles, with relatively mild summers, cool winters and rainfall spread fairly evenly throughout the year. Rainfall and Temperature records have been kept at Bidston since 1867, but records for atmospheric pressure go back as far as at least 1846. Bidston closed down in 2002 but the Met Office also has a weather station at Crosby. Since records began in 1867, temperatures have ranged from −17.6 °C (0.3 °F) on 21 December 2010 to 34.5 °C (94.1 °F) on 2 August 1990, although, Liverpool Airport recorded a temperature of 35.0 °C (95.0 °F) on 19 July 2006.
The lowest amount of sunshine on record was 16.5hrs in December 1927 whereas the most was 314.5hrs in July 2013.
Tornado activity or funnel cloud formation is very rare in and around the Liverpool area and tornadoes that do form are usually weak. Recent tornadoes or funnel clouds in Merseyside have been seen in 1998 and 2014.
During the period 1981–2010, Crosby recorded an average of 32.8 days of air frost per year, which is low for the United Kingdom. Snow is fairly common during the winter although heavy snow is rare. Snow generally falls between November and March but can occasionally fall earlier and later. In recent times, the earliest snowfall was on 1 October 2008 while the latest occurred on 15 May 2012. Although historically, the earliest snowfall occurred on 10 September 1908 and the latest on 2 June 1975.
Rainfall, although light, is quite a common occurrence in Liverpool, with the wettest month on record being October 1787, which recorded 9.16 in (232.7 mm) of rain and the driest being February 1932, with 0.035 in (0.9 mm). However, droughts can occasionally become a problem, especially, but not exclusively, in the summer, this happened most recently in 2018. However, the longest run of days without any rainfall was 41 days between 16 July and 25 August 1995. The driest year on record was 1991, with 18.92 in (480.5 mm) of rainfall and the wettest was 1792, with 54.25 in (1,378.0 mm).