The United Kingdom straddles the higher mid-latitudes between 49° and 61°N on the western seaboard of Europe. Since the UK is always in or close to the path of the polar front jet stream, frequent changes in pressure and unsettled weather are typical. Many types of weather can be experienced in a single day.
The instrumental temperature record is a record of temperatures within Earth's climate based on direct measurement of air temperature and ocean temperature, using thermometers and other thermometry devices. Instrumental temperature records are distinguished from indirect reconstructions using climate proxy data such as from tree rings and ocean sediments. Instrument-based data are collected from thousands of meteorological stations, buoys and ships around the globe. Whilst many heavily-populated areas have a high density of measurements, observations are more widely spread in sparsely populated areas such as polar regions and deserts, as well as over many parts of Africa and South America. Measurements were historically made using mercury or alcohol thermometers which were read manually, but are increasingly made using electronic sensors which transmit data automatically. Records of global average surface temperature are usually presented as anomalies rather than as absolute temperatures. A temperature anomaly is measured against a reference value. For example, a commonly used baseline period is the time period 1951-1980.
The Met Office Hadley Centre — named in honour of George Hadley — is one of the United Kingdom's leading centres for the study of scientific issues associated with climate change. It is part of, and based at the headquarters of the Met Office in Exeter.
Andagoya is a village in west-central Colombia. Andagoya is named for Pascual de Andagoya (1495–1548), a Spanish conquistador.
Gordon Valentine Manley, FRGS was a British climatologist who has been described as "probably the best known, most prolific and most expert on the climate of Britain of his generation". He assembled the Central England temperature (CET) series of monthly mean temperatures stretching back to 1659, which is the longest standardised instrumental record available for anywhere in the world. It provides a benchmark for proxy records of climatic change for the period covered, and is a notable example of scientific scholarship and perseverance. His two papers describing the work are available online.
The winter of 1962–1963, known as the Big Freeze of 1963, was one of the coldest winters on record in the United Kingdom. Temperatures plummeted and lakes and rivers began to freeze over.
Columbus, Ohio has a humid continental climate, characterized by humid, hot summers and cold winters, with no dry season. The Dfa climate has average temperatures above 22 °C during the warmest months, with at least four months averaging above 10 °C, and below 0 °C during the coldest. The climate is transitional with the Cfa humid subtropical climate to the south, characterized by humid, hot summers and cool winters.
The winter of 1894–1895 was severe for the British Isles with a Central England temperature (CET) of 1.17 °C or 34.1 °F. Many climatologists have come to view this winter as the end of the Little Ice Age and the culmination of a decade of harsh winters in Britain. Whereas the average CET for the 10 winters from 1885–1886 to 1894–1895 was 2.87 °C or 37.2 °F, no winter with a CET under 3.0 °C or 37.4 °F followed for 22 years and no month as cold as February or January 1895 until 1940. In contrast, between 1659 and 1894, no spell with every winter CET above 3.0 °C or 37.4 °F had lasted longer than 12 winters.
Cwmystwyth is a village in Ceredigion, Wales near Devil's Bridge, and Pont-rhyd-y-groes.
Altnaharra is a small hamlet in Sutherland in the Highland region of northern Scotland. The hamlet is on the A836 road, close to its junction with the B873. The nearest villages are Lairg and Tongue. Lochs in the area include Loch Naver and Loch Eriboll.
The winter of 2010–11 was a weather event that brought heavy snowfalls, record low temperatures, travel chaos and school disruption to the islands of Great Britain and Ireland. It included the United Kingdom's coldest December since Met Office records began, with a mean temperature of −1 °C (30 °F), breaking the previous record of 0.1 °C (32.2 °F) in December 1981. It was also the second coldest December in the narrower Central England Temperature (CET) record series which began in 1659, falling 0.1 °C short of the all-time record set in 1890. Although data has never officially been compiled, December 2010 is thought to be colder than December 1890 over the United Kingdom as a whole, as Scotland was up to 2 °C warmer than England. Hence, it is thought to be the coldest December across Great Britain since before 1659.
The Trewartha climate classification (TCC) or the Köppen–Trewartha climate classification (KTC) is a climate classification system first published by American geographer Glenn Thomas Trewartha in 1966. It is a modified version of the Köppen–Geiger system, created to answer some of its deficiencies. The Trewartha system attempts to redefine the middle latitudes to be closer to vegetation zoning and genetic climate systems.
The 1995 British Isles heatwave occurred between late July and late August. It was part of one of the warmest summers recorded in the UK, and one of the warmest Augusts ever recorded in many locations around the UK, as well as being one of the driest summers ever recorded in the UK; many weather stations recorded the summer of 1995 as drier than, or comparable with, the summer of 1976. Ireland was also widely affected by the heatwave with temperatures reaching over 30 °C (86 °F) in some locations, as well as exceptionally low rainfall throughout the summer.
The Spring 2013 United Kingdom cold wave was a period of unusually cold weather in the United Kingdom between 6 March and early April 2013. The cold wave consisted of very low temperatures and significant snowfall. Freezing temperatures worsened due to the significant overcast and cloud covered skies. Extensive snowfall occurred on 11 and 12 March in the South East, North and West of England and Wales. Most parts of England, north Wales and the Isle of Man also suffered heavy persistent snowfall on 22 and 23 March 2013.
The winter of 1981–1982 in the United Kingdom was a severe cold wave that was formed in early December 1981 and lasted until mid-late January in 1982, and was one of the coldest Decembers recorded in the United Kingdom.
The Winter of 1985–1986 in Great Britain and Ireland contained two periods of notably cold weather. November 1985 brought an early start to winter with the month being the coldest in the Central England region since 1925, with an average temperature of 4.1 °C (39.4 °F). However, December was milder than average and January close to average before February became the coldest month of any kind since January 1963 with an average temperature of −1.1 °C (30.0 °F). March and April were also below average, especially April which was the coldest since 1922 with an average temperature of just 5.8 °C (42.4 °F).
The 2018 Britain and Ireland heatwave was a period of unusually hot weather that took place in June, July and August. It caused widespread drought, hosepipe bans, crop failures, and a number of wildfires. These wildfires worst affected northern moorland areas around the Greater Manchester region, the largest was at Saddleworth Moor and another was at Winter Hill, together these burned over 14 square miles (36 km2) of land over a period of nearly a month.
The 1808 United Kingdom heat wave was a period of exceptionally high temperatures during July 1808. In the Central England Temperature series, dating back to 1659, at the time it was the 2nd hottest July on record, the hottest since 1783. As of 2022, it is the 9th hottest July on record. The month included some of the highest temperatures ever recorded in the UK. Temperature records from this time are likely dubious as the Stevenson screen was not introduced until the 1860s.
According to the Köppen climate classification, the climate of New York City is humid subtropical (Cfa), with parts of the city transitioning into a humid continental climate. (Dfa). The city experiences moderately cold, somewhat wet and snowy winters; and hot, humid summers with plentiful rainfall all year round. Also, New York's enormous population, human activity, and vast amounts of large buildings and streets, which absorb sunlight during the day, contribute significantly to the urban heat island effect. Were it not for this phenomenon, its climate would probably be within the humid continental temperature range.
